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Head Cases #1
Head Cases
Mick Herron's Slow Horses meets David Baldacci's The Camel Club in a hot new series. When a serial killer starts targeting other serial killers, and seems to be one step ahead of the FBI at every turn, only one team of misfits has a chance of stopping him ...
Gardner Camden is a walking analytical brain with an affinity for riddles, puzzles, and codes. It makes him the perfect fit for the Patterns and Recognition (PAR) unit of the FBI, a team of five brilliant but misfit agents who are too talented, too extraordinary to fire from the Bureau.
Gardner's smart, but he's all business - except for his seven-year-old daughter and occasional visits to his elderly mother, he prioritises his work and justice over everything else, no matter the cost.
A serial killer from one of Gardner's solved cases, presumed to be long dead, is found murdered, and then soon after, another body with a similar story. The mastermind murderer has left clues and riddles for Gardner and his team - a mathematician, a sniper and weapons expert, a computer analytics specialist, and their leader, a career agent - as they track him across the country. With the threat of PAR dissolving, the team can't afford to make any mistakes and Gardner must work to solve the riddles before it's too late.
McMahon's suspenseful and irresistible thriller confronts the scales of justices in the face of a twisted vengeance plot as this engaging cast of characters works together to stop a misguided vigilante.
Gardner Camden is a walking analytical brain with an affinity for riddles, puzzles, and codes. It makes him the perfect fit for the Patterns and Recognition (PAR) unit of the FBI, a team of five brilliant but misfit agents who are too talented, too extraordinary to fire from the Bureau.
Gardner's smart, but he's all business - except for his seven-year-old daughter and occasional visits to his elderly mother, he prioritises his work and justice over everything else, no matter the cost.
A serial killer from one of Gardner's solved cases, presumed to be long dead, is found murdered, and then soon after, another body with a similar story. The mastermind murderer has left clues and riddles for Gardner and his team - a mathematician, a sniper and weapons expert, a computer analytics specialist, and their leader, a career agent - as they track him across the country. With the threat of PAR dissolving, the team can't afford to make any mistakes and Gardner must work to solve the riddles before it's too late.
McMahon's suspenseful and irresistible thriller confronts the scales of justices in the face of a twisted vengeance plot as this engaging cast of characters works together to stop a misguided vigilante.
340 pages, Kindle Edition
First published January 28, 2025
802 people are currently reading
64325 people want to read
About the author
John McMahon
5 books753 followersJohn McMahon is the author of THE GOOD DETECTIVE and THE EVIL MEN DO, both featuring Georgia detective P.T. Marsh.
The New York Times Book Review called McMahon “one of those rare writers who seems to have sprung out of nowhere” and whose debut novel is “pretty much perfect.”
In his role as an ad agency creative director, he has won a Gold Clio for his work on Fiat, and he’s written a Super Bowl spot for Alfa Romeo.
He currently lives in Southern California with his family and two rescue animals.
The New York Times Book Review called McMahon “one of those rare writers who seems to have sprung out of nowhere” and whose debut novel is “pretty much perfect.”
In his role as an ad agency creative director, he has won a Gold Clio for his work on Fiat, and he’s written a Super Bowl spot for Alfa Romeo.
He currently lives in Southern California with his family and two rescue animals.
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Displaying 1 - 30 of 2,092 reviews
August 8, 2025
Sign me up for any future releases of the PAR Unit sequels—this is my new obsession! If you’re a fan of FBI dramas, Criminal Minds, or Profiler, and you also enjoyed the sharp wit of Slow Horses, you’ll love this book. The PAR Unit is a unique, unconventional FBI team made up of socially awkward, underrated, yet highly skilled individuals who struggle to follow rules and office politics but excel in solving the unsolvable.
The only thing missing from this book is a touch of sarcasm. If you’re expecting an eccentric, narcissistic leader like Jackson Lamb (brilliantly portrayed by Gary Oldman in Slow Horses), you won’t find one here. But don’t worry—FBI Agent Gardner Camden, the main protagonist, is far more likable and relatable. Unlike Lamb, Gardner is younger, clean-cut, and doesn’t rely on greasy food or alcohol to function (and yes, his socks are hole-free as far as I can tell!).
Gardner is a truly unique character. Socially awkward and possibly neurodivergent, he’s a master of puzzles, able to see patterns others miss. He is dedicated to doing what’s right, even at great personal cost—dividing his family, losing full custody of his daughter, and sacrificing his promising career. But given a second chance, he’d likely make the same choices. Now, he works with a team of outcasts in Jacksonville and only gets to see his daughter, Camila, for a few days at a time. She lives with her grandmother in Miami, who openly despises him for reasons Gardner can’t dispute.
The team members of PAR Unit are just as compelling. Cassie, Gardner’s partner, recently transferred after an incident with her previous superior and is as detail-oriented and brilliant with numbers as he is. Then there’s "The Shooter," a blonde, eccentric weapons expert who might just be my favorite team member. Frank, their leader, gives off "younger Denzel Washington" vibes but seems to take a back seat to Gardner on this case for mysterious reasons.
Rounding out the team is Richie, a dark-haired, highly skilled rookie in his mid-twenties. Suspiciously, his personnel file is sealed, something that quickly catches Gardner’s attention.
What makes the PAR Unit so extraordinary is their ability to detect patterns and solve puzzles ten times faster than the average FBI agent. Unfortunately, their colleagues call them “Head Cases” behind their backs, and the unit is at risk of being shut down. Their current assignment—a cryptic and high-stakes case—could make or break their careers.
A serial killer with a God complex is targeting other serial killers who escaped justice, killing them in the same gruesome ways they murdered their own victims. This killer thrives on puzzles and patterns, and he’s determined to draw Gardner into a dangerous game. Gardner must outthink the killer while refusing to play by his rules. Thankfully, he has a team of out-of-the-box thinkers to help him stay one step ahead and dismantle the killer’s plans. But can they win this deadly game of cat and mouse?
This book is a smart, fast-paced thriller with well-rounded, unconventional characters and an exhilarating plot. The satisfying conclusion left me urgently wishing for a sequel!
I’m giving this five stars for its nerdy, quirky, and brilliantly unconventional team!
Many thanks to NetGalley and St. Martin’s Press/Minotaur Books for sharing this brilliant crime thriller’s digital review copy with me in exchange for my honest thoughts.
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The only thing missing from this book is a touch of sarcasm. If you’re expecting an eccentric, narcissistic leader like Jackson Lamb (brilliantly portrayed by Gary Oldman in Slow Horses), you won’t find one here. But don’t worry—FBI Agent Gardner Camden, the main protagonist, is far more likable and relatable. Unlike Lamb, Gardner is younger, clean-cut, and doesn’t rely on greasy food or alcohol to function (and yes, his socks are hole-free as far as I can tell!).
Gardner is a truly unique character. Socially awkward and possibly neurodivergent, he’s a master of puzzles, able to see patterns others miss. He is dedicated to doing what’s right, even at great personal cost—dividing his family, losing full custody of his daughter, and sacrificing his promising career. But given a second chance, he’d likely make the same choices. Now, he works with a team of outcasts in Jacksonville and only gets to see his daughter, Camila, for a few days at a time. She lives with her grandmother in Miami, who openly despises him for reasons Gardner can’t dispute.
The team members of PAR Unit are just as compelling. Cassie, Gardner’s partner, recently transferred after an incident with her previous superior and is as detail-oriented and brilliant with numbers as he is. Then there’s "The Shooter," a blonde, eccentric weapons expert who might just be my favorite team member. Frank, their leader, gives off "younger Denzel Washington" vibes but seems to take a back seat to Gardner on this case for mysterious reasons.
Rounding out the team is Richie, a dark-haired, highly skilled rookie in his mid-twenties. Suspiciously, his personnel file is sealed, something that quickly catches Gardner’s attention.
What makes the PAR Unit so extraordinary is their ability to detect patterns and solve puzzles ten times faster than the average FBI agent. Unfortunately, their colleagues call them “Head Cases” behind their backs, and the unit is at risk of being shut down. Their current assignment—a cryptic and high-stakes case—could make or break their careers.
A serial killer with a God complex is targeting other serial killers who escaped justice, killing them in the same gruesome ways they murdered their own victims. This killer thrives on puzzles and patterns, and he’s determined to draw Gardner into a dangerous game. Gardner must outthink the killer while refusing to play by his rules. Thankfully, he has a team of out-of-the-box thinkers to help him stay one step ahead and dismantle the killer’s plans. But can they win this deadly game of cat and mouse?
This book is a smart, fast-paced thriller with well-rounded, unconventional characters and an exhilarating plot. The satisfying conclusion left me urgently wishing for a sequel!
I’m giving this five stars for its nerdy, quirky, and brilliantly unconventional team!
Many thanks to NetGalley and St. Martin’s Press/Minotaur Books for sharing this brilliant crime thriller’s digital review copy with me in exchange for my honest thoughts.
Follow me on medium.com to read my articles about books, movies, streaming series, astrology:
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October 20, 2024
I’m continuing my obsession with serial killers. Let me clarify… reading about them!💁🏼♀️
Introducing the unsung heroes of the FBI. The team that everyone snickers at. The members who all botched up their careers somewhere along the way. After which, were assembled to be part of a group known as PAR (Patterns and Recognition). Not surprisingly, they are misunderstood and relegated to dealing with cold cases. But make no mistake…these aren’t ordinary FBI agents. This unique group holds some of the most brilliant minds!
Until now.
The team now finds themselves front and center, assigned to find and capture one of the country's most dangerous serial-killer who ironically is now hunting other serial killers! (Nice twist, eh?!)😜
The lead from the PAR team is Agent Gardner Camden. It’s his first opportunity to act as lead investigator for his team and he is ready to dive in!
Oh my gosh, I just loved this book!
This specialized team of investigators were amazing. The author brought distinct and vivid life to each member, making them absolutely real to me from start to finish. Of course Agent Camden was my favorite. We got to know him both personally and professionally. Between his love for his daughter and mother I was absolutely book crushing on him!😍
Is this the start to a new series? I hope so! Please John McMahon bring the team back!
Thank you Tracy for recommending this book that I would have otherwise overlooked.
And now I'm paying it forward and recommending this book to everyone who enjoys all things FBI and serial killer themed.
Thank you to NetGalley and St. Martin’s Press
Introducing the unsung heroes of the FBI. The team that everyone snickers at. The members who all botched up their careers somewhere along the way. After which, were assembled to be part of a group known as PAR (Patterns and Recognition). Not surprisingly, they are misunderstood and relegated to dealing with cold cases. But make no mistake…these aren’t ordinary FBI agents. This unique group holds some of the most brilliant minds!
Until now.
The team now finds themselves front and center, assigned to find and capture one of the country's most dangerous serial-killer who ironically is now hunting other serial killers! (Nice twist, eh?!)😜
The lead from the PAR team is Agent Gardner Camden. It’s his first opportunity to act as lead investigator for his team and he is ready to dive in!
Oh my gosh, I just loved this book!
This specialized team of investigators were amazing. The author brought distinct and vivid life to each member, making them absolutely real to me from start to finish. Of course Agent Camden was my favorite. We got to know him both personally and professionally. Between his love for his daughter and mother I was absolutely book crushing on him!😍
Is this the start to a new series? I hope so! Please John McMahon bring the team back!
Thank you Tracy for recommending this book that I would have otherwise overlooked.
And now I'm paying it forward and recommending this book to everyone who enjoys all things FBI and serial killer themed.
Thank you to NetGalley and St. Martin’s Press
January 15, 2025
John McMahon has a winner with
Head Cases,
the first book in the PAR Unit series. Filled with unusual characters hunting down a murderer seeking his own brand of justice, the FBI’s Patterns and Recognition (PAR) unit is generally tasked with solving cold cases. The team consists of five misfit agents led by Frank Roberts, but the main character is Special Agent Gardner Camden.
A serial killer from one of Gardner’s solved cases, thought to be dead for more than a decade, is found murdered. Soon, there’s another similar case. The killer has left clues and riddles, but can the team solve them?
Gardner is intelligent, confident, all business, and has an eidetic memory. He thinks in terms of layers and patterns, avoids friendships with most, and can come across as arrogant. He has an affinity for riddles, puzzles, and codes. I enjoyed how the author brought to life both the personal and professional lives of Gardner. As readers learn his background, it provides insight into his thoughts, behaviors, and actions. It was fascinating to see how Gardner’s mind worked to solve the various puzzles.
Frank is a career agent and the other members include a mathematician, a sniper and weapons expert, and a computer analytics specialist. The secondary and tertiary characters are reasonably well-drawn for the first book in the series and I would expect the repeat characters to gain more depth as the series progresses. It was also delightful to see how this team of supposed misfits worked so well together.
I was immediately intrigued by the storyline and the complexities in the plot. It kept me captivated throughout the novel. It was fascinating to see the story unfold. Full of suspense, this thriller looks at justice through the eyes of Gardner, but readers also get a feel for the antagonist and the vengeance that is sought.
The conflicts move the story through some twists and turns as the story gradually builds momentum and finishes with some surprises and an action-packed finish. The novel also illuminated the politics that can go on behind the scene for agents that don’t fit the traditional mold.
Overall, this was a compelling and dynamic story with excellent characterization, good pacing, and a great plot that includes solid procedural details. I can’t wait to read the next book in the series which is expected in 2026. Those who enjoy crime thrillers and FBI investigations with extraordinary characters as well as those who enjoy solving puzzles will likely enjoy this novel.
St. Marin’s Press – Minotaur Books and John McMahon provided a complimentary digital ARC of this novel via NetGalley. All opinions expressed in this review are my own. The publication date is currently set for January 28, 2025. This review was originally posted at Mystery and Suspense Magazine.
======================================
My 4.48 rounded to 4 stars review is coming soon.
A serial killer from one of Gardner’s solved cases, thought to be dead for more than a decade, is found murdered. Soon, there’s another similar case. The killer has left clues and riddles, but can the team solve them?
Gardner is intelligent, confident, all business, and has an eidetic memory. He thinks in terms of layers and patterns, avoids friendships with most, and can come across as arrogant. He has an affinity for riddles, puzzles, and codes. I enjoyed how the author brought to life both the personal and professional lives of Gardner. As readers learn his background, it provides insight into his thoughts, behaviors, and actions. It was fascinating to see how Gardner’s mind worked to solve the various puzzles.
Frank is a career agent and the other members include a mathematician, a sniper and weapons expert, and a computer analytics specialist. The secondary and tertiary characters are reasonably well-drawn for the first book in the series and I would expect the repeat characters to gain more depth as the series progresses. It was also delightful to see how this team of supposed misfits worked so well together.
I was immediately intrigued by the storyline and the complexities in the plot. It kept me captivated throughout the novel. It was fascinating to see the story unfold. Full of suspense, this thriller looks at justice through the eyes of Gardner, but readers also get a feel for the antagonist and the vengeance that is sought.
The conflicts move the story through some twists and turns as the story gradually builds momentum and finishes with some surprises and an action-packed finish. The novel also illuminated the politics that can go on behind the scene for agents that don’t fit the traditional mold.
Overall, this was a compelling and dynamic story with excellent characterization, good pacing, and a great plot that includes solid procedural details. I can’t wait to read the next book in the series which is expected in 2026. Those who enjoy crime thrillers and FBI investigations with extraordinary characters as well as those who enjoy solving puzzles will likely enjoy this novel.
St. Marin’s Press – Minotaur Books and John McMahon provided a complimentary digital ARC of this novel via NetGalley. All opinions expressed in this review are my own. The publication date is currently set for January 28, 2025. This review was originally posted at Mystery and Suspense Magazine.
======================================
My 4.48 rounded to 4 stars review is coming soon.
October 1, 2025
3.5 rounded ⬆️
FBI Agent Gardner Camden and his team work in the FBI’S Patterns and Recognition (PAR) unit, working mostly Cold Cases, under their boss, Frank Roberts. Despite the fact that they solve the cases that nobody else can-they are actually called “head cases” by colleagues instead of elite.
Camden has a an affinity for puzzles and an Eidetic memory. His partner, Cassie Pardo specializes in statistics and numbers. Rounding out the team are sharp shooter, Joanne “shooter” Harris and a young rookie named Richie Brancato. (though I didn’t feel like we really got to know the last two well)
When it becomes obvious that there is a SERIAL KILLER murdering serial killers, the team finds themselves working on a live case.
And, THIS killer loves toying with Agent Camden…
This book went on and off my TBR so many times that I lost count, but since I was offered an early copy of Inside Man (PAR Unit #2) and I prefer to read books from a series IN ORDER, it was time to give the Audiobook narrated by Will Damron a listen! 🎧 9 hours 36 minutes
Although I will occasionally read Police Procedurals, they aren’t my favorite -NOR are SERIES-which is why I never got to this one when it was released.
I DID ENJOY the story, but I haven’t decided if I will continue on with the series because there simply isn’t enough time to read everything that I would like to and my personal preferences lean more toward other genres and stand-alone books.
Inside Man (PAR Unit #2) comes out January 13, 2026.
FBI Agent Gardner Camden and his team work in the FBI’S Patterns and Recognition (PAR) unit, working mostly Cold Cases, under their boss, Frank Roberts. Despite the fact that they solve the cases that nobody else can-they are actually called “head cases” by colleagues instead of elite.
Camden has a an affinity for puzzles and an Eidetic memory. His partner, Cassie Pardo specializes in statistics and numbers. Rounding out the team are sharp shooter, Joanne “shooter” Harris and a young rookie named Richie Brancato. (though I didn’t feel like we really got to know the last two well)
When it becomes obvious that there is a SERIAL KILLER murdering serial killers, the team finds themselves working on a live case.
And, THIS killer loves toying with Agent Camden…
This book went on and off my TBR so many times that I lost count, but since I was offered an early copy of Inside Man (PAR Unit #2) and I prefer to read books from a series IN ORDER, it was time to give the Audiobook narrated by Will Damron a listen! 🎧 9 hours 36 minutes
Although I will occasionally read Police Procedurals, they aren’t my favorite -NOR are SERIES-which is why I never got to this one when it was released.
I DID ENJOY the story, but I haven’t decided if I will continue on with the series because there simply isn’t enough time to read everything that I would like to and my personal preferences lean more toward other genres and stand-alone books.
Inside Man (PAR Unit #2) comes out January 13, 2026.
January 19, 2025
Intense, shocking gripping, and hard to put down, Head Cases is an awesome book! I was instantly hooked and on the edge of my seat as I listened to the wonderfully narrated audiobook version of this riveting book! This is the first book in a new series, and I am already hoping with fingers crossed that John McMahon is already working on the next book!!!!!!
FBI Agent Gardner Camden is not like other FBI agents. He has a penchant for solving puzzles as do the other members of the PAR unit - Patterns and Recognition. They are a quirky, intelligent, and unusual group of agents who look at cases differently. They are called in to investigate when a murder victim is linked to a serial killer, they believed has been dead for some time. They will utilize all their unique skills to not only uncover the killer's identity but to bring the killer to justice!
This book was excellent. Gardner was a great fully fleshed out character. I enjoyed his thoughts, his determination, his approach to the case, and his courage. I also enjoyed his mother as well. I loved the interactions between the team members and how they worked together. They are an interesting bunch, and I enjoyed how they contributed to the investigation. I also loved the tension, the dread, the mystery, the sense of danger, and the taunting of the killer throughout the book. Fans of Criminal Minds or similar programs will love this book! What am I saying, readers who like gripping, shocking, well thought out, wonderfully written mysteries, and intelligent books will love Head Cases.
Thank you to Macmillan Audio and NetGalley who provided me with a copy of this book in exchange for an honest review. All the thoughts and opinions are my own.
Read more of my reviews at www.openbookposts.com 📖
FBI Agent Gardner Camden is not like other FBI agents. He has a penchant for solving puzzles as do the other members of the PAR unit - Patterns and Recognition. They are a quirky, intelligent, and unusual group of agents who look at cases differently. They are called in to investigate when a murder victim is linked to a serial killer, they believed has been dead for some time. They will utilize all their unique skills to not only uncover the killer's identity but to bring the killer to justice!
This book was excellent. Gardner was a great fully fleshed out character. I enjoyed his thoughts, his determination, his approach to the case, and his courage. I also enjoyed his mother as well. I loved the interactions between the team members and how they worked together. They are an interesting bunch, and I enjoyed how they contributed to the investigation. I also loved the tension, the dread, the mystery, the sense of danger, and the taunting of the killer throughout the book. Fans of Criminal Minds or similar programs will love this book! What am I saying, readers who like gripping, shocking, well thought out, wonderfully written mysteries, and intelligent books will love Head Cases.
Thank you to Macmillan Audio and NetGalley who provided me with a copy of this book in exchange for an honest review. All the thoughts and opinions are my own.
Read more of my reviews at www.openbookposts.com 📖
April 5, 2025
4+ stars!
A serial killer killing serial killers!
Gardner Camden is a quirky, brilliant, socially-awkward, numbers-driven FBI PAR (Patterns and Recognition) agent who has been given the lead on a peculiar case. A serial killer’s body is discovered dead, yet this serial killer was found dead in a fire years prior. Soon after, another body is found and Camden learns there is a new serial killer on the loose and they are killing serial killers.
I had an immediate connection to the quirky main character. His numbers driven brain was so fascinating and entertaining. I loved being inside his head and learning how his thought process unfolded. His personal life was a clever element as it greatly increased my connection to him. Brilliant in his own way, his social awkwardness and analytical brain had me invested and rooting for him from page 1.
The writing was a fast paced and engrossing. I was absorbed in all details of each case as well as the characters lives. Each character was unique and memorable and added a well-plotted layer to the story.
The entertaining ending wrapped everything up, but parts of the ending felt convenient and implausible. Regardless of this, I thoroughly enjoyed this story and highly recommend it to police procedural fans. Another reviewer compared this to the show Criminal Minds and I agree that is a great comparison.
Audio rating: 5 stars! The audio narrator was excellent and held my attention throughout. His narration perfectly matched the main characters personality and enhanced my connection to the book. Highly recommend the audio!
A serial killer killing serial killers!
Gardner Camden is a quirky, brilliant, socially-awkward, numbers-driven FBI PAR (Patterns and Recognition) agent who has been given the lead on a peculiar case. A serial killer’s body is discovered dead, yet this serial killer was found dead in a fire years prior. Soon after, another body is found and Camden learns there is a new serial killer on the loose and they are killing serial killers.
I had an immediate connection to the quirky main character. His numbers driven brain was so fascinating and entertaining. I loved being inside his head and learning how his thought process unfolded. His personal life was a clever element as it greatly increased my connection to him. Brilliant in his own way, his social awkwardness and analytical brain had me invested and rooting for him from page 1.
The writing was a fast paced and engrossing. I was absorbed in all details of each case as well as the characters lives. Each character was unique and memorable and added a well-plotted layer to the story.
The entertaining ending wrapped everything up, but parts of the ending felt convenient and implausible. Regardless of this, I thoroughly enjoyed this story and highly recommend it to police procedural fans. Another reviewer compared this to the show Criminal Minds and I agree that is a great comparison.
Audio rating: 5 stars! The audio narrator was excellent and held my attention throughout. His narration perfectly matched the main characters personality and enhanced my connection to the book. Highly recommend the audio!
June 23, 2025
I am excited to share I recently discovered a new, exciting author and thriller by John McMahon that will keep readers on the edge of their seats.
A gripping new thriller by John McMahon that promises to keep readers on the edge of their seats! This intense narrative delves into the chilling world of serial killers through the lens of a uniquely formidable group within the FBI. When a wave of serial killers turns up dead, the elite Patterns and Recognition (PAR) Team springs into action. Led by the brilliant Gardner Camden, they race against time to track down a new killer while being taunted by a mysterious vigilante.
Determined to halt the escalating violence and bring their prime suspect to justice, Camden and his team must stay one step ahead in a complex game of cat and mouse.
McMahon crafts an action-packed tale that grabs your attention from the first page. Those acquainted with Gardner Camden's thinking know he's a master at piecing together puzzles, often spotting details that elude everyone else. Some might see his talent as a hint of autism or savant-like abilities, but his unique perspective is invaluable in the high-stakes world of the FBI.
Typically called in when other teams falter, the PAR Team excels at solving cold cases. But this time, they're thrust into a fiery scenario where discretion is paramount. Camden— is faced with the challenges of untangling a web of deception while confronting the shocking resurgence of a supposedly dead serial killer. The dynamics of Camden's personal life add another layer of complexity to the narrative. His struggles to maintain a relationship with his estranged wife and daughter, who struggle to understand his quirks, and the dedication he places on his job further humanize him while serving to illustrate the psychological toll of his profession and the societal disconnect he faces due to his analytical disposition.
As bodies of serial killers pile up, the team grows increasingly uneasy about the possibility of a vigilante on the loose—someone bent on cleaning up the remnants of the FBI's past failures. The stakes couldn't be higher, with rumours swirling about the PAR Team's imminent disbandment. When the elusive killer begins to toy with Camden, leaving behind cryptic clues, the countdown begins to unveil a foe determined to make their mark and ensure these brutal killings don’t go ignored. Gardner Camden may finally have met his match unless he can uncover the missing link.
John McMahon delivers an electrifying thriller that keeps you guessing at every turn. The narrative unfolds rapidly, weaving together a complex tapestry of clues that propel the story forward with relentless momentum. As the tension builds, readers find themselves piecing together the mysteries, only to be met with unexpected twists that heighten the intrigue. Key characters are richly developed throughout, each offering tantalizing glimpses into their pasts, leaving ample room for future exploration.
With constant revelations and surprises, the plot maintains a sense of ongoing mystery that gradually unravels hidden truths. I eagerly await John McMahon’s next installment featuring Gardner Camden, whose enigmatic character has much more to reveal.
This book is a must-read if you love well-paced, non-stop action, solving puzzles, and unravelling mysteries with compelling, realistic, richly developed characters, and you enjoy crime procedurals— prepare yourself for a rollercoaster ride of unexpected twists and turns that will keep you guessing at every turn. For those with a flair for tracking serial killers, this exhilarating read will surely grip your attention and keep you captivated until the very last page!
I had a wonderfully immersive reading experience as I alternated between the audiobook and my Kindle. Will Damron's narration truly stood out; it was fantastic. He brought the character of Camden to life in a way that felt incredibly authentic and relatable. It was as if he had stepped right into Camden's shoes, allowing every moment of the story to resonate deeply with me.
I would also like to express my gratitude to St. Martin's Press/Minotaur Books and Macmillan Audio for providing a copy of the e-arc and a copy of the ALC through NetGalley in exchange for honest feedback. All opinions expressed are my own.
Expected release date is January 28, 2025
Expected release date is January 28, 2025
A gripping new thriller by John McMahon that promises to keep readers on the edge of their seats! This intense narrative delves into the chilling world of serial killers through the lens of a uniquely formidable group within the FBI. When a wave of serial killers turns up dead, the elite Patterns and Recognition (PAR) Team springs into action. Led by the brilliant Gardner Camden, they race against time to track down a new killer while being taunted by a mysterious vigilante.
Determined to halt the escalating violence and bring their prime suspect to justice, Camden and his team must stay one step ahead in a complex game of cat and mouse.
McMahon crafts an action-packed tale that grabs your attention from the first page. Those acquainted with Gardner Camden's thinking know he's a master at piecing together puzzles, often spotting details that elude everyone else. Some might see his talent as a hint of autism or savant-like abilities, but his unique perspective is invaluable in the high-stakes world of the FBI.
Typically called in when other teams falter, the PAR Team excels at solving cold cases. But this time, they're thrust into a fiery scenario where discretion is paramount. Camden— is faced with the challenges of untangling a web of deception while confronting the shocking resurgence of a supposedly dead serial killer. The dynamics of Camden's personal life add another layer of complexity to the narrative. His struggles to maintain a relationship with his estranged wife and daughter, who struggle to understand his quirks, and the dedication he places on his job further humanize him while serving to illustrate the psychological toll of his profession and the societal disconnect he faces due to his analytical disposition.
As bodies of serial killers pile up, the team grows increasingly uneasy about the possibility of a vigilante on the loose—someone bent on cleaning up the remnants of the FBI's past failures. The stakes couldn't be higher, with rumours swirling about the PAR Team's imminent disbandment. When the elusive killer begins to toy with Camden, leaving behind cryptic clues, the countdown begins to unveil a foe determined to make their mark and ensure these brutal killings don’t go ignored. Gardner Camden may finally have met his match unless he can uncover the missing link.
John McMahon delivers an electrifying thriller that keeps you guessing at every turn. The narrative unfolds rapidly, weaving together a complex tapestry of clues that propel the story forward with relentless momentum. As the tension builds, readers find themselves piecing together the mysteries, only to be met with unexpected twists that heighten the intrigue. Key characters are richly developed throughout, each offering tantalizing glimpses into their pasts, leaving ample room for future exploration.
With constant revelations and surprises, the plot maintains a sense of ongoing mystery that gradually unravels hidden truths. I eagerly await John McMahon’s next installment featuring Gardner Camden, whose enigmatic character has much more to reveal.
This book is a must-read if you love well-paced, non-stop action, solving puzzles, and unravelling mysteries with compelling, realistic, richly developed characters, and you enjoy crime procedurals— prepare yourself for a rollercoaster ride of unexpected twists and turns that will keep you guessing at every turn. For those with a flair for tracking serial killers, this exhilarating read will surely grip your attention and keep you captivated until the very last page!
I had a wonderfully immersive reading experience as I alternated between the audiobook and my Kindle. Will Damron's narration truly stood out; it was fantastic. He brought the character of Camden to life in a way that felt incredibly authentic and relatable. It was as if he had stepped right into Camden's shoes, allowing every moment of the story to resonate deeply with me.
I would also like to express my gratitude to St. Martin's Press/Minotaur Books and Macmillan Audio for providing a copy of the e-arc and a copy of the ALC through NetGalley in exchange for honest feedback. All opinions expressed are my own.
Expected release date is January 28, 2025
Expected release date is January 28, 2025
January 12, 2026
Narrated by one of my new favorite characters, Head Cases was an addictively fast-paced, unputdownable read. From the idea of vigilante justice to the epic game of cat-and-mouse, this whirlwind of a novel had everything I love in a crime thriller. It also, however, had some extras that you don’t often find. With a motley crew of quirky FBI agents including an eccentric, strait-laced, puzzle-solving narrator, the dry wit and genuine feel to all five of the compelling characters easily pulled me into the story. It was Gardner and and his drive to do what was right at all costs, though, who I loved the most. Using him to explore justice, morality, and the murkiness of right vs. wrong, I was blown away by the insightfulness of this novel. Don’t worry, it was also tense, original, action-packed, and clever, which made me into a brand-spanking-new fan of this insanely talented author and his new take on crime fiction.
What else did I love about this stellar first book in a new series? Well, in addition to the *chef’s kiss* characters and Criminal Minds-esque feel was a well-thought-out mystery that had me on the edge of my seat from beginning to end. Complex yet easy to follow, the twists and turns kept me guessing right up until the truth exploded into view with the precision of a well-deployed missile. You see, it took your standard police procedural and turned it into something more. Not only was the book intense, dark, and twisted, but the serial killer plot line took everything up a notch thanks to a murderer hunting other killers. Add in the aforementioned oddball crime solvers, and the race to see who would win had me glued to the pages. So if you love unlikely heroes and evil villains—both of whom were also realistically flawed—give this book a try. Now on to book two: Inside Man! Rating of 5 stars.
SYNOPSIS:
FBI Agent Gardner Camden is an analytical genius with an affinity for puzzles. He also has a blind spot on the human side of investigations, a blindness that sometimes even includes people in his own life, like his beloved seven-year-old daughter Camila. Gardner and his squad of brilliant yet quirky agents make up the Patterns and Recognition (PAR) unit, the FBI’s hidden edge, brought in for cases that no one else can solve.
When DNA links a murder victim to a serial killer long presumed dead, the team springs into action. A second victim establishes a pattern, and the murderer begins leaving a trail of clues and riddles especially for Gardner. And while the PAR team is usually relegated to working cold cases from behind a desk, the investigation puts them on the road and into the public eye, following in the footsteps of a killer.
Along with Gardner, PAR consists of a mathematician, a weapons expert, a computer analyst, and their leader, a career agent. Each of them must use every skill they have to solve the riddle of the killer’s identity. But with the perpetrator somehow learning more and more about the team at PAR, can they protect themselves and their families…before it’s too late?
Thank you John McMahon and Minotaur Books for my complimentary copy. All opinions are my own.
PUB DATE: January 28, 2025
Content warning: dementia, murder, blood, gun violence
What else did I love about this stellar first book in a new series? Well, in addition to the *chef’s kiss* characters and Criminal Minds-esque feel was a well-thought-out mystery that had me on the edge of my seat from beginning to end. Complex yet easy to follow, the twists and turns kept me guessing right up until the truth exploded into view with the precision of a well-deployed missile. You see, it took your standard police procedural and turned it into something more. Not only was the book intense, dark, and twisted, but the serial killer plot line took everything up a notch thanks to a murderer hunting other killers. Add in the aforementioned oddball crime solvers, and the race to see who would win had me glued to the pages. So if you love unlikely heroes and evil villains—both of whom were also realistically flawed—give this book a try. Now on to book two: Inside Man! Rating of 5 stars.
SYNOPSIS:
FBI Agent Gardner Camden is an analytical genius with an affinity for puzzles. He also has a blind spot on the human side of investigations, a blindness that sometimes even includes people in his own life, like his beloved seven-year-old daughter Camila. Gardner and his squad of brilliant yet quirky agents make up the Patterns and Recognition (PAR) unit, the FBI’s hidden edge, brought in for cases that no one else can solve.
When DNA links a murder victim to a serial killer long presumed dead, the team springs into action. A second victim establishes a pattern, and the murderer begins leaving a trail of clues and riddles especially for Gardner. And while the PAR team is usually relegated to working cold cases from behind a desk, the investigation puts them on the road and into the public eye, following in the footsteps of a killer.
Along with Gardner, PAR consists of a mathematician, a weapons expert, a computer analyst, and their leader, a career agent. Each of them must use every skill they have to solve the riddle of the killer’s identity. But with the perpetrator somehow learning more and more about the team at PAR, can they protect themselves and their families…before it’s too late?
Thank you John McMahon and Minotaur Books for my complimentary copy. All opinions are my own.
PUB DATE: January 28, 2025
Content warning: dementia, murder, blood, gun violence
June 4, 2025
First time author for me. I do enjoy a serial killer book, and this was a good one that I rate 3.5*. I thought it a bit too procedural. It had a few sections with some great actions sequence's but was mainly clue deduction. I knew the background of the team members but the only FBI character that felt fleshed out was Agent Camden. The killer was interesting, and the case was resolved satisfactorily.
January 6, 2026
Head Cases is a super-strong start to an all new Police Procedural Mystery series, following an elite, yet obscure, unit in the FBI called PAR (Patterns and Recognition).
I learned about this book through good ole' fashioned word of mouth, and I could tell from what my friends were saying that this would align with my taste. Happily, it certainly did.
Our MC is FBI Agent Gardner Camden. He's undoubtedly an analytical genius, but unfortunately, the people-side of his analysis tend to be lacking. He's a puzzle genius, yet a mediocre people person.
Nevertheless, along with the rest of the team, each bringing their own special set of skills to the table, they're a true force to be reckoned with.
The case in question involves a murder victim whose DNA links to a serial killer long-presumed dead. A 2nd-victim establishes a pattern, and the killer seems to be leaving behind clues and riddles especially created for Gardner.
The team flies into action and the rest of the story is a whirlwind of cat-and-mouse suspense as Gardner gets closer-and-closer to catching the killer.
I listened to the audiobook for this one and found it to be so gripping. I highly recommend that format should you have access to it. I felt the narrator became Agent Gardner for me. It was completely believable.
I loved the quirky team as well. They each have their own strengths and weaknesses, working well together to get the outcome they all desired. I love when strong teams are shown on page, versus teams full of drama and strife.
I would HIGHLY recommend this to fans of Criminal Minds. I was totally picturing Matthew Grey Gubler and Shemar Moore the whole time, which obviously is not a bad thing...
I'm not sure what the long-term plan is for this series, but the possibilities are endless. I'd definitely be down for joining this team on a lot more cases.
Thank you to the publisher, Macmillan Audio, for providing me with a copy to read and review. I cannot wait for more PAR Unit!!
I learned about this book through good ole' fashioned word of mouth, and I could tell from what my friends were saying that this would align with my taste. Happily, it certainly did.
Our MC is FBI Agent Gardner Camden. He's undoubtedly an analytical genius, but unfortunately, the people-side of his analysis tend to be lacking. He's a puzzle genius, yet a mediocre people person.
Nevertheless, along with the rest of the team, each bringing their own special set of skills to the table, they're a true force to be reckoned with.
The case in question involves a murder victim whose DNA links to a serial killer long-presumed dead. A 2nd-victim establishes a pattern, and the killer seems to be leaving behind clues and riddles especially created for Gardner.
The team flies into action and the rest of the story is a whirlwind of cat-and-mouse suspense as Gardner gets closer-and-closer to catching the killer.
I listened to the audiobook for this one and found it to be so gripping. I highly recommend that format should you have access to it. I felt the narrator became Agent Gardner for me. It was completely believable.
I loved the quirky team as well. They each have their own strengths and weaknesses, working well together to get the outcome they all desired. I love when strong teams are shown on page, versus teams full of drama and strife.
I would HIGHLY recommend this to fans of Criminal Minds. I was totally picturing Matthew Grey Gubler and Shemar Moore the whole time, which obviously is not a bad thing...
I'm not sure what the long-term plan is for this series, but the possibilities are endless. I'd definitely be down for joining this team on a lot more cases.
Thank you to the publisher, Macmillan Audio, for providing me with a copy to read and review. I cannot wait for more PAR Unit!!
January 12, 2025
I’m not one to grab all the procedurals out there, but I dabble when one throws a spark. ⚡️ I love a character who has learned to take a weakness and hone it into a formidable skill set.
Gardner Camden is a FBI agent and a member of PAR (Patterns and Recognition). They may be talented, but each member has been reprimanded for wrongdoing and is on the team as a punishment. Nevertheless, the team is clever and close knit. They have a reputation for solving the cases that leave other teams baffled.
They get called in when a serial killer is found murdered. The kicker is this particular killer was found dead in a fire years ago by Camden. Soon another serial killer is found dead. The team realizes this murderer knows more about the FBI than any civilian should.
How will the team protect each other and their families?
Who is the next target?
In less than twenty-four hours I was wondering how I could be finished with this. My brain never stopped turning over possible scenarios. The PAR team has flaws and strengths that fly off the page in brilliant form. There are no strapping hero stereotypes; these are underdogs that I wanted to root for and understand. I liked spending time with these well developed characters. I’ve been to many of the places and landmarks mentioned and the descriptions were top notch.
The way the plot unfolded was brilliant and it felt like the pacing was timed perfectly.
Well done!! 👏🏻 👏🏻👏🏻
All the stars!⭐️
Many thanks to NetGalley and St. Martin’s Press for providing an Advance Reading Copy for review. These are my unbiased opinions.
Gardner Camden is a FBI agent and a member of PAR (Patterns and Recognition). They may be talented, but each member has been reprimanded for wrongdoing and is on the team as a punishment. Nevertheless, the team is clever and close knit. They have a reputation for solving the cases that leave other teams baffled.
They get called in when a serial killer is found murdered. The kicker is this particular killer was found dead in a fire years ago by Camden. Soon another serial killer is found dead. The team realizes this murderer knows more about the FBI than any civilian should.
How will the team protect each other and their families?
Who is the next target?
In less than twenty-four hours I was wondering how I could be finished with this. My brain never stopped turning over possible scenarios. The PAR team has flaws and strengths that fly off the page in brilliant form. There are no strapping hero stereotypes; these are underdogs that I wanted to root for and understand. I liked spending time with these well developed characters. I’ve been to many of the places and landmarks mentioned and the descriptions were top notch.
The way the plot unfolded was brilliant and it felt like the pacing was timed perfectly.
Well done!! 👏🏻 👏🏻👏🏻
All the stars!⭐️
Many thanks to NetGalley and St. Martin’s Press for providing an Advance Reading Copy for review. These are my unbiased opinions.
January 9, 2025
I came across this one while trolling the reviews of GR friend, Liz. It sounded really good, like my kind of story; about a team of FBI agents, who all have a big black mark on their FBI records and got banished to PAR group as punishment. So, an all-around a really fun bunch of folks, who are all wicked smart and kind of funny, that makes for a really great read.
There’s the group leader, Frank, who almost had a liaison with a superior’s wife. There’s Gardner, who turned his wife, Anna, in when he found out she was embezzling money. He now shares custody of their daughter, Camila, with his MIL, Rosa, who can’t stand him for what he did to Anna and husband, Saul. Besides being his FIL, Saul was also Gardner’s partner (who Gardner idolized), who had a heart attack and died when Anna was arrested. Yeah, there’s a WHOLE lot of family drama going on there.
There’s also Cassie, the mathematician, who had some “incident” with a superior, and then there’s the weapons expert Jo, aka Shooter, who had some kind of shooting snafu on a case. Lastly, there is Richie, who wasn’t banished to PAR, but actually asked for the assignment straight out of Quantico. Immediately, the rest of the team became suspicious of him. Nobody would ever ask to be a part of PAR, and that is a whole other story to be revealed later.
Most of the story revolves around PAR investigating a case of a serial killer killing serial killers. Things take a turn for the worse when the killer has info that no one else would have except law enforcement. Then the case gets personal and the killer has info on Gardner that only the FBI has. The end gets kind of crazy and intense and a whole lot bargaining and wrangling, which ends in a lead-in to the next installment. One that I will definitely be looking out for.
The character development on some of the characters was well done, like Gardner and the killer. Would have loved to see more development on the team, especially Cassie and Shooter (love Shooter!), but that was probably by design and McMahon is saving it for the next installment. I REALLY want to know what that “incident” Cassie had with a superior. I have an idea and I really hope I’m not too far off. Anyway, the pacing was steady to fast, the storyline very interesting and the writing was well done. I’m looking at an overall rating of 4.2 that I will be rounding down to a 4star review. I want to thank NetGalley and Macmillan Audio for sending me this eARC in exchange for my honest review.
#NetGalley #MacmillanAudio #HeadCases
There’s the group leader, Frank, who almost had a liaison with a superior’s wife. There’s Gardner, who turned his wife, Anna, in when he found out she was embezzling money. He now shares custody of their daughter, Camila, with his MIL, Rosa, who can’t stand him for what he did to Anna and husband, Saul. Besides being his FIL, Saul was also Gardner’s partner (who Gardner idolized), who had a heart attack and died when Anna was arrested. Yeah, there’s a WHOLE lot of family drama going on there.
There’s also Cassie, the mathematician, who had some “incident” with a superior, and then there’s the weapons expert Jo, aka Shooter, who had some kind of shooting snafu on a case. Lastly, there is Richie, who wasn’t banished to PAR, but actually asked for the assignment straight out of Quantico. Immediately, the rest of the team became suspicious of him. Nobody would ever ask to be a part of PAR, and that is a whole other story to be revealed later.
Most of the story revolves around PAR investigating a case of a serial killer killing serial killers. Things take a turn for the worse when the killer has info that no one else would have except law enforcement. Then the case gets personal and the killer has info on Gardner that only the FBI has. The end gets kind of crazy and intense and a whole lot bargaining and wrangling, which ends in a lead-in to the next installment. One that I will definitely be looking out for.
The character development on some of the characters was well done, like Gardner and the killer. Would have loved to see more development on the team, especially Cassie and Shooter (love Shooter!), but that was probably by design and McMahon is saving it for the next installment. I REALLY want to know what that “incident” Cassie had with a superior. I have an idea and I really hope I’m not too far off. Anyway, the pacing was steady to fast, the storyline very interesting and the writing was well done. I’m looking at an overall rating of 4.2 that I will be rounding down to a 4star review. I want to thank NetGalley and Macmillan Audio for sending me this eARC in exchange for my honest review.
#NetGalley #MacmillanAudio #HeadCases
February 9, 2025
A serial killer is exterminating serial killers!
There is a unit of five FBI agents dedicated to identifying and unraveling unusual puzzling crimes known as Patterns and Recognition (PAR). Internally nicknamed ‘The Head Cases’ because of their unique crime-solving techniques, the unit is considered the ‘bottom of the barrel’ within the FBI.
PAR agent Gardner Camden (our sole narrator) and his partner Cassie Pardo are dispatched to a crime scene in Dallas, Texas. A vicious killer of women has been found dead – murdered. When a second body turns up in another state – also a mass murderer – the PAR team conclude that that a vigilante killer is going after bad people. Who and why? Given their detailed knowledge of the past crimes committed all avenues lead to someone in law enforcement, potentially even the FBI.
Head Cases (the first in a series) began with a hiss and a roar, I was glued to the pages for the first intense 30%. But tracking leads, analysing clues, the investigation process, and internal politics within the FBI soon grew stale and long-winded. I craved more excitement, suspense, and shocks. Even when the stakes were personal for the agents the threat wasn’t high enough. I do understand though that a certain amount of info dump was needed to establish and set up the series.
The characters were the stand-out. Each had their own unique personality quirks and strengths, that contributed to the team, and the investigation. There were hints and reveals of compelling backstories, and each character complimented, and cared about, one another. The PAR unit definitely contained both a found family vibe, and outsiders finding a place where they fit and belonged.
Even though the crime plot in Head Cases wasn’t my favourite the characters were intriguing enough, and the note it ended on has left me keen enough to discover where this is going and continue the series.
There is a unit of five FBI agents dedicated to identifying and unraveling unusual puzzling crimes known as Patterns and Recognition (PAR). Internally nicknamed ‘The Head Cases’ because of their unique crime-solving techniques, the unit is considered the ‘bottom of the barrel’ within the FBI.
PAR agent Gardner Camden (our sole narrator) and his partner Cassie Pardo are dispatched to a crime scene in Dallas, Texas. A vicious killer of women has been found dead – murdered. When a second body turns up in another state – also a mass murderer – the PAR team conclude that that a vigilante killer is going after bad people. Who and why? Given their detailed knowledge of the past crimes committed all avenues lead to someone in law enforcement, potentially even the FBI.
Head Cases (the first in a series) began with a hiss and a roar, I was glued to the pages for the first intense 30%. But tracking leads, analysing clues, the investigation process, and internal politics within the FBI soon grew stale and long-winded. I craved more excitement, suspense, and shocks. Even when the stakes were personal for the agents the threat wasn’t high enough. I do understand though that a certain amount of info dump was needed to establish and set up the series.
The characters were the stand-out. Each had their own unique personality quirks and strengths, that contributed to the team, and the investigation. There were hints and reveals of compelling backstories, and each character complimented, and cared about, one another. The PAR unit definitely contained both a found family vibe, and outsiders finding a place where they fit and belonged.
Even though the crime plot in Head Cases wasn’t my favourite the characters were intriguing enough, and the note it ended on has left me keen enough to discover where this is going and continue the series.
January 4, 2025
Gardner Camden is a genius - and he employs his superpower at PAR, a specialized unit of the FBI. PAR is made up of a nerdy group of accomplished misfits who have been banished to obscurity because of one misdemeanor or the other.
Gardner's quirky ways start to grow on you: his internal compass always points him toward truth and justice, so trying to navigate (tactfully) around all the internal politics and infighting that is the FBI is a constant battle for him.
He sees things in very clear cut ways, but the powers that be don't see this internal compass, often voiced in a blunt manner, as an asset.
A highly sensitive case involving the murder of several known serial killers leads to Gardner Camden heading this elite think tank out in the field.
We get to know each of Gardner's highly colourful team members - which is good because this is the first installment in a future series. I, for one, can't wait for the next installment! (I shot my sleeping patterns right to hell - I simply could not put this book down!)
I highly recommend this action-packed novel. It has it all: great writing, plenty of action, a totally twisted plot, and an intriguing cast of characters.
My thanks to the author, John McMahon, the publisher and NetGalley for an ARC of this novel in exchange for an honest review. 5 out of 5 well deserved stars, and then some!
(Expected Publication Date: January 28, 2025.)
Gardner's quirky ways start to grow on you: his internal compass always points him toward truth and justice, so trying to navigate (tactfully) around all the internal politics and infighting that is the FBI is a constant battle for him.
He sees things in very clear cut ways, but the powers that be don't see this internal compass, often voiced in a blunt manner, as an asset.
A highly sensitive case involving the murder of several known serial killers leads to Gardner Camden heading this elite think tank out in the field.
We get to know each of Gardner's highly colourful team members - which is good because this is the first installment in a future series. I, for one, can't wait for the next installment! (I shot my sleeping patterns right to hell - I simply could not put this book down!)
I highly recommend this action-packed novel. It has it all: great writing, plenty of action, a totally twisted plot, and an intriguing cast of characters.
My thanks to the author, John McMahon, the publisher and NetGalley for an ARC of this novel in exchange for an honest review. 5 out of 5 well deserved stars, and then some!
(Expected Publication Date: January 28, 2025.)
February 20, 2025
So, you know that feeling when FOMO completely takes over, and you have to read the latest hyped book, even though you weren’t planning to—only to end up wishing you hadn’t? Yeah. That was me with Head Cases.
I had such high expectations, I was ready to be completely wowed from page one, but quickly, I started to wonder if I was missing out on something everyone else was getting. I found the characters interesting and sometimes that’s enough to keep me hooked, but the plot has to, you know, pull some of the weight. Instead, it was just page after page of analyzing clues and endless theorizing, until it all blurred together and I wasn’t even paying attention anymore. I wanted more—more action, more suspense, and higher stakes—but instead, I got a lot of talking and not enough happening, and yeah…
In the end, I was left wanting more—and not in a good way.
I received a copy from the publisher through NetGalley
I had such high expectations, I was ready to be completely wowed from page one, but quickly, I started to wonder if I was missing out on something everyone else was getting. I found the characters interesting and sometimes that’s enough to keep me hooked, but the plot has to, you know, pull some of the weight. Instead, it was just page after page of analyzing clues and endless theorizing, until it all blurred together and I wasn’t even paying attention anymore. I wanted more—more action, more suspense, and higher stakes—but instead, I got a lot of talking and not enough happening, and yeah…
In the end, I was left wanting more—and not in a good way.
I received a copy from the publisher through NetGalley
December 4, 2024
(4.25 stars)
Head Cases is the derogatory nickname other FBI folks give the members of a special unit called PAR: Patterns And Recognition. They are people who have messed up in some way in other FBI posts but they each are brilliant in their own way and seem to work really well together, usually working on cold cases.
This time, though, they are called in for a “hot” case. They are assigned to find a serial killer who is out there killing other serial killers! Gardner Camden leads the team for the first time, and he is grappling with this responsibility in addition to working the case. I loved his character; we get to know him professionally and personally. His love for his young daughter was palpable. The other members of the team were written as individuals so I had no trouble keeping track of who was who.
The mystery is a complex one and I loved guessing what was going to happen next and what the various clues might mean. The audiobook kept me and my husband entertained on a long road trip. The narrator did a fabulous job with all the voices. I’m going to look for more books narrated by Will Damron!
I sure hope there are going to be more books featuring these characters. The ending certainly hinted at it. In the meantime, I’m going to try to read his earlier books.
Thank you to Macmillan Audio and NetGalley for the opportunity to listen to an advance copy of this audiobook and St. Martin’s Press and NetGalley for the opportunity to read an advance reader copy of this book. All opinions are my own.
Head Cases is the derogatory nickname other FBI folks give the members of a special unit called PAR: Patterns And Recognition. They are people who have messed up in some way in other FBI posts but they each are brilliant in their own way and seem to work really well together, usually working on cold cases.
This time, though, they are called in for a “hot” case. They are assigned to find a serial killer who is out there killing other serial killers! Gardner Camden leads the team for the first time, and he is grappling with this responsibility in addition to working the case. I loved his character; we get to know him professionally and personally. His love for his young daughter was palpable. The other members of the team were written as individuals so I had no trouble keeping track of who was who.
The mystery is a complex one and I loved guessing what was going to happen next and what the various clues might mean. The audiobook kept me and my husband entertained on a long road trip. The narrator did a fabulous job with all the voices. I’m going to look for more books narrated by Will Damron!
I sure hope there are going to be more books featuring these characters. The ending certainly hinted at it. In the meantime, I’m going to try to read his earlier books.
Thank you to Macmillan Audio and NetGalley for the opportunity to listen to an advance copy of this audiobook and St. Martin’s Press and NetGalley for the opportunity to read an advance reader copy of this book. All opinions are my own.
January 1, 2025
I'm not going to try and summarize the synopsis but if I had to sum it up in as few words as possible I'd say it's about a serial killer who's killing other serial killers and the team of detectives who are trying to capture him.
Gardner Camden and his team make up the Patterns and Recognition (PAR) unit of the FBI. This 5-member team consists of agents who are considered "misfits" - in one way or another they've messed up in the past and have been shuffled off to anonymity. They're a quirky bunch but brilliant in one way or another. A serial killer from one of Gardner’s solved cases, presumed to be dead for over a decade, is found murdered and another body with a similar story soon after. The murderer has left clues and riddles for Gardner and his team as they track him across the country. With the threat of PAR being disbanded, Gardner must work to solve the riddles before it’s too late.
I really enjoyed this story and these characters and will continue to follow the series when other books are available. I was exhausted following Camden back and forth between Texas and Florida and points between. He seemed to be constantly on a jet going somewhere. He is really "special" as his mother will tell you. This is the second book recently where prime numbers played a big role in a character's thought processes. I enjoyed the flashes of humour from some of the characters, even Gardner although he had to explain it was a joke. There was plenty of tension and "oh no" moments to keep the suspense ratcheted up and I was happy with the ending.
This is my first experience of an audiobook narrated by Will Damron (I wonder how often he gets called Damon?!) and he did an outstanding job voicing the different characters. I kind of wished there had been a female narrator as well since there were quite a few female characters including a young girl but Mr. Damron did a fine job with their voices.
My thanks to Macmillan Audio via Netgalley for granting my request to listen to this audiobook. All opinions expressed are my own.
Publication Date: January 28, 2025
Gardner Camden and his team make up the Patterns and Recognition (PAR) unit of the FBI. This 5-member team consists of agents who are considered "misfits" - in one way or another they've messed up in the past and have been shuffled off to anonymity. They're a quirky bunch but brilliant in one way or another. A serial killer from one of Gardner’s solved cases, presumed to be dead for over a decade, is found murdered and another body with a similar story soon after. The murderer has left clues and riddles for Gardner and his team as they track him across the country. With the threat of PAR being disbanded, Gardner must work to solve the riddles before it’s too late.
I really enjoyed this story and these characters and will continue to follow the series when other books are available. I was exhausted following Camden back and forth between Texas and Florida and points between. He seemed to be constantly on a jet going somewhere. He is really "special" as his mother will tell you. This is the second book recently where prime numbers played a big role in a character's thought processes. I enjoyed the flashes of humour from some of the characters, even Gardner although he had to explain it was a joke. There was plenty of tension and "oh no" moments to keep the suspense ratcheted up and I was happy with the ending.
This is my first experience of an audiobook narrated by Will Damron (I wonder how often he gets called Damon?!) and he did an outstanding job voicing the different characters. I kind of wished there had been a female narrator as well since there were quite a few female characters including a young girl but Mr. Damron did a fine job with their voices.
My thanks to Macmillan Audio via Netgalley for granting my request to listen to this audiobook. All opinions expressed are my own.
Publication Date: January 28, 2025
April 5, 2025
Not sure what the hoopla is over this book. It was good, for sure, but I wouldn't call it great. 3.5 stars good for me.
Loved Gardner’s relationship with his mom. Didn’t really care for the FBI hierarchy or bureaucracy. Also, would’ve liked more attention on his partner’s storyline.
Overall, good read, but aside from Gardner, characters were underdeveloped, and the trope of reforming losers was uninspiring.
Loved Gardner’s relationship with his mom. Didn’t really care for the FBI hierarchy or bureaucracy. Also, would’ve liked more attention on his partner’s storyline.
Overall, good read, but aside from Gardner, characters were underdeveloped, and the trope of reforming losers was uninspiring.
January 26, 2025
Check out all my reviews at: https://www.avonnalovesgenres.com
HEAD CASES (PAR Unit #1) by John McMahon is an engaging and exciting first book in a new series featuring a group of extremely talented and specialized FBI agents, who while brilliant in their specific areas, have had a serious misstep in their careers and are now grouped together for a last chance to keep their jobs. While the PAR (Patterns and Recognition) unit is quirky, the book’s crime plot is gripping, gritty and graphic as they chase a serial killer of serial killers.
FBI Agent Gardner Camden is an analytical genius with an eidetic memory who loves puzzles but is extremely socially awkward. The PAR unit is not deployed to the field but is used when all others have failed to solve a case by analyzing data from their office and finding that missing piece that helps solve the case.
But this case is different. The DNA of a murder victim has come back as a match to a serial killer who was presumed dead. Gardner’s supervisor and the head of the FBI have chosen him to lead this hunt in the field. While the Gardner and the team look forward to the field work, they also realize that if this case is not solved, the recriminations will blow back on them and they could be reassigned or terminated.
The killer has personal information on Gardner that could only come from his FBI file as he taunts and threatens him and his family after another kill. Can Gardner and his unit stop this killer before his endgame and final disappearance?
This is an exciting serial killer crime thriller that kept me reading from page one to the end. Gardner is such a great protagonist, and the author brings him to life as a fully developed and believable character. While not stated in the story, you realize he is somewhere on the spectrum, but his mother has taught him how to deal with his special intellect and social awkwardness from childhood. All his other teammates are brilliant and interesting in their own quirkiness and specialties and will probably be more in the limelight in future books.
The crime thriller plot in this story is perfectly paced with a God complex serial killer and the step-by-step hunt to capture him. Some of the surprises along the way come from more than just the antagonist and Gardner must make decisions that not only affect him, but his whole unit. There are graphic descriptions of blood and body parts throughout, but it is a serial killer thriller and to be expected.
I highly recommend this crime thriller police procedural with great new characters that I am looking forward to following in future books.
HEAD CASES (PAR Unit #1) by John McMahon is an engaging and exciting first book in a new series featuring a group of extremely talented and specialized FBI agents, who while brilliant in their specific areas, have had a serious misstep in their careers and are now grouped together for a last chance to keep their jobs. While the PAR (Patterns and Recognition) unit is quirky, the book’s crime plot is gripping, gritty and graphic as they chase a serial killer of serial killers.
FBI Agent Gardner Camden is an analytical genius with an eidetic memory who loves puzzles but is extremely socially awkward. The PAR unit is not deployed to the field but is used when all others have failed to solve a case by analyzing data from their office and finding that missing piece that helps solve the case.
But this case is different. The DNA of a murder victim has come back as a match to a serial killer who was presumed dead. Gardner’s supervisor and the head of the FBI have chosen him to lead this hunt in the field. While the Gardner and the team look forward to the field work, they also realize that if this case is not solved, the recriminations will blow back on them and they could be reassigned or terminated.
The killer has personal information on Gardner that could only come from his FBI file as he taunts and threatens him and his family after another kill. Can Gardner and his unit stop this killer before his endgame and final disappearance?
This is an exciting serial killer crime thriller that kept me reading from page one to the end. Gardner is such a great protagonist, and the author brings him to life as a fully developed and believable character. While not stated in the story, you realize he is somewhere on the spectrum, but his mother has taught him how to deal with his special intellect and social awkwardness from childhood. All his other teammates are brilliant and interesting in their own quirkiness and specialties and will probably be more in the limelight in future books.
The crime thriller plot in this story is perfectly paced with a God complex serial killer and the step-by-step hunt to capture him. Some of the surprises along the way come from more than just the antagonist and Gardner must make decisions that not only affect him, but his whole unit. There are graphic descriptions of blood and body parts throughout, but it is a serial killer thriller and to be expected.
I highly recommend this crime thriller police procedural with great new characters that I am looking forward to following in future books.
March 24, 2025
4.5 stars for one of the smartest FBI books I’ve read. These “head cases” are super intelligent officers expert at solving puzzles. You’re just along for the ride. Excellent book. Already looking forward for the next.
September 4, 2025
Hell-to-the-Yes! That story was awesome! Before I start, I just want you guys to know that the whole time I was reading this, I pictured the younger guy from Mindhunter! Yes! That guy!
What you need to know is that this is a strong serial killer tale involving the FBI. PAR is a team within the FBI that consists of agents with very specialized skills. Each of them must use every skill they have to solve the riddle of the killer’s identity.
This was so highly fascinating! I love getting down to the nitty gritty details and bringing the clues together! The analytical aspect drew me in! The best part of this book were the characters! They felt real and genuine. The MC, Gardner Camden, is a beast!!!
I’m so glad I got the opportunity to read this before book #2 hits the shelves. Inside Man is set to release in January 2026 and you better bet your sweet ass I’ll be reading it!
5 ⭐️⭐️⭐️⭐️⭐️
Huge thanks to Minotaur Books and John McMahon for the gifted copy!
What you need to know is that this is a strong serial killer tale involving the FBI. PAR is a team within the FBI that consists of agents with very specialized skills. Each of them must use every skill they have to solve the riddle of the killer’s identity.
This was so highly fascinating! I love getting down to the nitty gritty details and bringing the clues together! The analytical aspect drew me in! The best part of this book were the characters! They felt real and genuine. The MC, Gardner Camden, is a beast!!!
I’m so glad I got the opportunity to read this before book #2 hits the shelves. Inside Man is set to release in January 2026 and you better bet your sweet ass I’ll be reading it!
5 ⭐️⭐️⭐️⭐️⭐️
Huge thanks to Minotaur Books and John McMahon for the gifted copy!
January 30, 2025
the setup…
Seven years ago, FBI Special Agent Gardner Camden identified serial killer Ross Tignon as the dead body incinerated in his own home. Now, he’s been identified as a murder victim in Texas. Camden is part of the FBI’s Patterns and Recognition (PAR) Unit, which includes several other agents who are brilliant at what they do but considered to be unconventional by the bureau’s standards. Camden is an analytical genius who struggles with socialization. Now he’s assigned the lead in the Tignon case since it was his originally and they soon realize this murder is part of a pattern, linked to at least two others.
the heart of the story…
While Gardner doesn’t head the PAR Unit, he’s the central focus here and I found him fascinating. Every member of the team has a specialty but his genius is extraordinary. The case was peculiar with the killer dangling clues specifically for Gardner to untangle. At times it felt like an intelligent cat and mouse game, which kept the tension high. Even though the unit has an excellent solved case record, they’re not given the respect they’ve earned. A lot hinges on this case, including their political survival.
the narration…
I was already a fan of Will Damron and he surpassed my already high expectations. He was Gardner in every way important and brought serious skills to the storytelling.
the bottom line…
I went into this pretty certain I’d enjoy the story but this was next level, flying through it in a day. If there’d been a second book on deck I’d be starting that now. The procedurals are as unconventional as the team and I didn’t even try to second guess them, content to just hang on and keep up. It’s clever, advanced and highly unpredictable. The human side of the team has equal footing here, too, providing the character layers I’ve come to crave from series reading. I hope the next book is on the near horizon!
Posted on Blue Mood Café
(Thanks to Macmillan Audio and NetGalley for my complimentary copy. All opinions are my own.)
Seven years ago, FBI Special Agent Gardner Camden identified serial killer Ross Tignon as the dead body incinerated in his own home. Now, he’s been identified as a murder victim in Texas. Camden is part of the FBI’s Patterns and Recognition (PAR) Unit, which includes several other agents who are brilliant at what they do but considered to be unconventional by the bureau’s standards. Camden is an analytical genius who struggles with socialization. Now he’s assigned the lead in the Tignon case since it was his originally and they soon realize this murder is part of a pattern, linked to at least two others.
the heart of the story…
While Gardner doesn’t head the PAR Unit, he’s the central focus here and I found him fascinating. Every member of the team has a specialty but his genius is extraordinary. The case was peculiar with the killer dangling clues specifically for Gardner to untangle. At times it felt like an intelligent cat and mouse game, which kept the tension high. Even though the unit has an excellent solved case record, they’re not given the respect they’ve earned. A lot hinges on this case, including their political survival.
the narration…
I was already a fan of Will Damron and he surpassed my already high expectations. He was Gardner in every way important and brought serious skills to the storytelling.
the bottom line…
I went into this pretty certain I’d enjoy the story but this was next level, flying through it in a day. If there’d been a second book on deck I’d be starting that now. The procedurals are as unconventional as the team and I didn’t even try to second guess them, content to just hang on and keep up. It’s clever, advanced and highly unpredictable. The human side of the team has equal footing here, too, providing the character layers I’ve come to crave from series reading. I hope the next book is on the near horizon!
Posted on Blue Mood Café
(Thanks to Macmillan Audio and NetGalley for my complimentary copy. All opinions are my own.)
February 7, 2025
An audiobook which felt like binge watching a season of Mindhunter or Broadchurch, but with a considerably more fun crew with neurodivergent Agent Gardner Camden with his analytical genius but inability for emotional connections at its center. Plus a mathematician, a weapons expert, a computer analyst, and a career agent. All of them have at some point in their FBI career screwed up, and ended up in the Patterns and Recognition (PAR) unit to solve especially tricky cases.
When Gardner is sent to investigate the murder of a victim who turns out to be a serial killer who is supposed to be long dead, the unit connects the dots to form a pattern that leads them to a serial killer who kills serial killers 🤯 Plus he gets personal with Gardner telling him he does the dirty work for them!
I really enjoyed this, it's mindless fun you can listen on the side while doing some chores. It's good that it wasn't too complicated and far-fetched for its own good and as a reader/listener you never had the feeling of not being able to keep up. I'll definitelywait for further installments, consider me a fan!
When Gardner is sent to investigate the murder of a victim who turns out to be a serial killer who is supposed to be long dead, the unit connects the dots to form a pattern that leads them to a serial killer who kills serial killers 🤯 Plus he gets personal with Gardner telling him he does the dirty work for them!
I really enjoyed this, it's mindless fun you can listen on the side while doing some chores. It's good that it wasn't too complicated and far-fetched for its own good and as a reader/listener you never had the feeling of not being able to keep up. I'll definitelywait for further installments, consider me a fan!
December 9, 2024
First and foremost, a large thank you to NetGalley, John McMahon, and Macmillan Audio for providing me with a copy of this publication, which allows me to provide you with an unbiased review.
Always looking for new and exciting authors, I discovered this book by John McMahon. This gritty story seeks to manage the serial killer theme by presenting a unique and mystifying group within the FBI who must chase them down. When a number of serial killers turn up dead, the FBI’s elite PAR Team is called to assist. Led by Gardner Camden, the team seeks to follow a killer and their vague clues across the country, while being goaded by this vigilante. Hoping to stem the violence and bring their newest killer to justice, Camden and the PAR will have to remain one step ahead of the ever-evolving situation. McMahon brings all the action in this piece, hoping to impress the reader from the outset.
Those who know Gardner Camden are familiar with his unique way of synthesising information. While many see his affinity for puzzles as somewhat autistic or a slice of savant, he gets things done and sees what others miss. He is the perfect fit for an elite unit within the FBI, where subtle is essential. The Patterns and Recognition (PAR) Team works well and is usually called in to assist when other groups have failed, which is perfect for Camden to lead.
After the murder of a long-thought-dead serial killer, PAR is called in on the sly. The group of five is used to cold cases, but this one is red hot, though the need for secrecy is key. Special Agent Camden must work all angles to discover the missing link and try to make sense of the recent discovery of a man he was sure had been dead. While trying to piece it all together, Camden must struggle with his ongoing issues trying to forge a relationship with his young daughter and estranged wife. They cannot understand his nuances or the importance he places in the job.
When the bodies of more serial killers turn up across the country, Camden and the rest of the team worries that this could be a vigilante killer who is trying to clean up the mess left by the Feds in the past. As rumours of the imminent disbanding of PAR, there is no room for error. When the killer begins taunting Camden and tries to send him subtle hints, the race is on to find someone who wants to show their mettle and keep the killings from being forgotten. Gardner Camden may have met his match, unless he can find the missing link. John McMahon delivers a great thrill with this piece and has me eager for more!
John McMahon does well with this thriller, keeping the reader on edge as much is revealed. The narrative introduces the reader to a great deal in short order pushing pieces together and providing strong pathways to guide things in a forward direction. As the momentum picks up, the reader is able to assemble things and keep the intensity, all while the story gets more twisted. Key characters provide some backstories as well as develop throughout the reading experience, never revealing too much at one time. This leaves the option open for more in the series, should McMahon wish to add other novels. The plot twists are constant and leave things in an ongoing mystery, though they are slowly exposed to keep the reader connecting as plot points emerge and truths surface. I can hope that John McMahon will return with another novel and use Gardner Camden to star in the leading role, as there is much about him that remains opaque and in need of exploration.
Kudos, Mr. McMahon, for this unique thriller that kept me hooked.
Love/hate the review? An ever-growing collection of others appears at:
http://pecheyponderings.wordpress.com/
Always looking for new and exciting authors, I discovered this book by John McMahon. This gritty story seeks to manage the serial killer theme by presenting a unique and mystifying group within the FBI who must chase them down. When a number of serial killers turn up dead, the FBI’s elite PAR Team is called to assist. Led by Gardner Camden, the team seeks to follow a killer and their vague clues across the country, while being goaded by this vigilante. Hoping to stem the violence and bring their newest killer to justice, Camden and the PAR will have to remain one step ahead of the ever-evolving situation. McMahon brings all the action in this piece, hoping to impress the reader from the outset.
Those who know Gardner Camden are familiar with his unique way of synthesising information. While many see his affinity for puzzles as somewhat autistic or a slice of savant, he gets things done and sees what others miss. He is the perfect fit for an elite unit within the FBI, where subtle is essential. The Patterns and Recognition (PAR) Team works well and is usually called in to assist when other groups have failed, which is perfect for Camden to lead.
After the murder of a long-thought-dead serial killer, PAR is called in on the sly. The group of five is used to cold cases, but this one is red hot, though the need for secrecy is key. Special Agent Camden must work all angles to discover the missing link and try to make sense of the recent discovery of a man he was sure had been dead. While trying to piece it all together, Camden must struggle with his ongoing issues trying to forge a relationship with his young daughter and estranged wife. They cannot understand his nuances or the importance he places in the job.
When the bodies of more serial killers turn up across the country, Camden and the rest of the team worries that this could be a vigilante killer who is trying to clean up the mess left by the Feds in the past. As rumours of the imminent disbanding of PAR, there is no room for error. When the killer begins taunting Camden and tries to send him subtle hints, the race is on to find someone who wants to show their mettle and keep the killings from being forgotten. Gardner Camden may have met his match, unless he can find the missing link. John McMahon delivers a great thrill with this piece and has me eager for more!
John McMahon does well with this thriller, keeping the reader on edge as much is revealed. The narrative introduces the reader to a great deal in short order pushing pieces together and providing strong pathways to guide things in a forward direction. As the momentum picks up, the reader is able to assemble things and keep the intensity, all while the story gets more twisted. Key characters provide some backstories as well as develop throughout the reading experience, never revealing too much at one time. This leaves the option open for more in the series, should McMahon wish to add other novels. The plot twists are constant and leave things in an ongoing mystery, though they are slowly exposed to keep the reader connecting as plot points emerge and truths surface. I can hope that John McMahon will return with another novel and use Gardner Camden to star in the leading role, as there is much about him that remains opaque and in need of exploration.
Kudos, Mr. McMahon, for this unique thriller that kept me hooked.
Love/hate the review? An ever-growing collection of others appears at:
http://pecheyponderings.wordpress.com/
November 9, 2024
My favorite mystery/thrillers are ones with a law enforcement main character. I love wading through the clues and cases with them to try and solve the crime, oftentimes needing to do so before it’s too late. New to me author, John McMahon, has created a wonderful character in FBI agent Gardner Camden. Although not explicitly stated, it’s clear Camden is neurodivergent with a high IQ and a difficulty in social situations. He is part of a team of misfits called PAR (Patterns and Recognition) who get assigned a case to find the killer who is murdering serial killers.
The case has Camden and his crew crossing the US in order to find and stop a killer who taunts them with clues and phone calls. Each side character is as well-developed as Camden and plays an integral role in solving the crimes. I was right there beside each of them trying to piece it all together.
The story comes to a satisfying conclusion with an opening for the possibility of more books, so I was happy to read in the acknowledgments that another book is forthcoming. I could see this series continuing on for some time as the PAR team becomes a group similar to that of the BSU/BAU in the FBI.
I received an advanced copy through Netgalley in return for an honest review.
The case has Camden and his crew crossing the US in order to find and stop a killer who taunts them with clues and phone calls. Each side character is as well-developed as Camden and plays an integral role in solving the crimes. I was right there beside each of them trying to piece it all together.
The story comes to a satisfying conclusion with an opening for the possibility of more books, so I was happy to read in the acknowledgments that another book is forthcoming. I could see this series continuing on for some time as the PAR team becomes a group similar to that of the BSU/BAU in the FBI.
I received an advanced copy through Netgalley in return for an honest review.
December 4, 2024
I loved this book! it was clever, it was dark and highly addictive. And come on serial killers, it had me there to be fair!! I really do hope this is the start of a new series, I want more of these characters, they were so interesting and have so much more to tell us .
The Patterns and Recognition team at the FBI are hunting a killer, a killer who is killing serial killers, it is pretty graphic at times, as you would expect from this storyline. The team are all super intelligent and I loved every bit of it. Getting inside the killers head through the team putting all the puzzle pieces together was very satisfying
The narrator, Will Damron was fantastic as always. He always brings the story to life.
Thanks so much to Macmillan Audio for my early copy of the audiobook to listen to . Out on January 28th, a must read for crime enthusiasts.
The Patterns and Recognition team at the FBI are hunting a killer, a killer who is killing serial killers, it is pretty graphic at times, as you would expect from this storyline. The team are all super intelligent and I loved every bit of it. Getting inside the killers head through the team putting all the puzzle pieces together was very satisfying
The narrator, Will Damron was fantastic as always. He always brings the story to life.
Thanks so much to Macmillan Audio for my early copy of the audiobook to listen to . Out on January 28th, a must read for crime enthusiasts.
May 17, 2025
* 3.75⭐️0🌶️
* Read if you like: FBI, serial killers killing serial killers, riddles and puzzles throughout to crack a case
* First book in a new series. FBI agent Gardner is part of the PAR unit which stands for patterns and recognition are tasked to the case to try and see if there is a pattern to try and stop from anymore killings. His partner is Cassie, a younger hipster girl who is very optimistic.
* Riddles. What I absolutely love in books it literally the first word.
* “Over two hundred bacteria thrive on each square inch of our palms” - not sure if that’s a fact but I’m not about to google it lol.
* The book starts with two serial killers being found dead. And then they come to realize that another serial killer is killing serial killers.
* This book is gory. And really scary. I couldn’t read it at night alone. Something fell in my room and I almost broke a limb being all tangled in my sheets trying to jump and karate chop an attacker. I have never reacted this way from reading a book. So I’d say it was a hit. The plot was very captivating and the “bad guy” was really believable and good. I also loved Gardners socially awkward self and his relationship with his daughter. Can’t wait to see where the next book takes me!
* Read if you like: FBI, serial killers killing serial killers, riddles and puzzles throughout to crack a case
* First book in a new series. FBI agent Gardner is part of the PAR unit which stands for patterns and recognition are tasked to the case to try and see if there is a pattern to try and stop from anymore killings. His partner is Cassie, a younger hipster girl who is very optimistic.
* Riddles. What I absolutely love in books it literally the first word.
* “Over two hundred bacteria thrive on each square inch of our palms” - not sure if that’s a fact but I’m not about to google it lol.
* The book starts with two serial killers being found dead. And then they come to realize that another serial killer is killing serial killers.
* This book is gory. And really scary. I couldn’t read it at night alone. Something fell in my room and I almost broke a limb being all tangled in my sheets trying to jump and karate chop an attacker. I have never reacted this way from reading a book. So I’d say it was a hit. The plot was very captivating and the “bad guy” was really believable and good. I also loved Gardners socially awkward self and his relationship with his daughter. Can’t wait to see where the next book takes me!
February 4, 2025
My Rating: 5⭐️⭐️⭐️⭐️⭐️Loved it, so glad there is going to be another in the series!!!
PAR (Patterns and Recognition) is a unit of the FBI. It has the “Head Cases” a group of Brilliant Freaks as they are referred to. Goodreads has a really good synopsis (but its long) honestly it is worth just going in blind knowing that the unit follows patterns, its made up of really super smart people who are a bit odd… but all work together really well.
I personally really loved this (thanks to CarolG for your review of this one) this is my first 5 star book for the year… wooo give it up!! But its not one that was OMG THIS MUST BE 5STARS… but it was more a case of yep… this is great I love the way this is written and ill be honest I have been thinking about it for a couple of days.
I really enjoyed the writing in this, it was easy to read but it was interesting. I feel like it was well researched and it was completely made up then it felt well researched. I really liked feeling like I was part of the investigation.
What i found to be the best part of this is that it focuses on characters that are left of centre or outcasts but are brilliant. Gardner “Gardy” Camden was written so well I just thought it was great to see his intellect but also the way he was trying to feel things or crack jokes the way others do but essentially knowing that he just doesn’t. His partner in PAR is great, she compliments his weirdness with her quirky teenager speak (even though shes not a teenager) I assume to distract from other things that are going on for her. There are three other members of the team who are great but these two are the focus for this one.
It would be great in the next book (and the one after and after that please John) to see some backstory for some of the other PAR chracters. Gardy is a great MMC and I still want to know more about him but it would be great to dig into the team and what makes them tick.
This case was interesting it was a serial killer who kills serial killers… pfft what could be better. But of course he gets a bit of too much of a liking for it and all hell breaks loose.
I really did love the relationship Gardner has with his mother and his daughter… that was interesting and very cute.
Overall I just really liked this story, I think it was a great read, engaging action packed story with something new. This is my first novel by John McMahon but I’ve already gone and got his back catalogue while I wait for the next PAR novel.
PAR (Patterns and Recognition) is a unit of the FBI. It has the “Head Cases” a group of Brilliant Freaks as they are referred to. Goodreads has a really good synopsis (but its long) honestly it is worth just going in blind knowing that the unit follows patterns, its made up of really super smart people who are a bit odd… but all work together really well.
I personally really loved this (thanks to CarolG for your review of this one) this is my first 5 star book for the year… wooo give it up!! But its not one that was OMG THIS MUST BE 5STARS… but it was more a case of yep… this is great I love the way this is written and ill be honest I have been thinking about it for a couple of days.
I really enjoyed the writing in this, it was easy to read but it was interesting. I feel like it was well researched and it was completely made up then it felt well researched. I really liked feeling like I was part of the investigation.
What i found to be the best part of this is that it focuses on characters that are left of centre or outcasts but are brilliant. Gardner “Gardy” Camden was written so well I just thought it was great to see his intellect but also the way he was trying to feel things or crack jokes the way others do but essentially knowing that he just doesn’t. His partner in PAR is great, she compliments his weirdness with her quirky teenager speak (even though shes not a teenager) I assume to distract from other things that are going on for her. There are three other members of the team who are great but these two are the focus for this one.
It would be great in the next book (and the one after and after that please John) to see some backstory for some of the other PAR chracters. Gardy is a great MMC and I still want to know more about him but it would be great to dig into the team and what makes them tick.
This case was interesting it was a serial killer who kills serial killers… pfft what could be better. But of course he gets a bit of too much of a liking for it and all hell breaks loose.
I really did love the relationship Gardner has with his mother and his daughter… that was interesting and very cute.
Overall I just really liked this story, I think it was a great read, engaging action packed story with something new. This is my first novel by John McMahon but I’ve already gone and got his back catalogue while I wait for the next PAR novel.
March 15, 2025
Finished Reading
Pre-Read notes
I *just* started reading this one and I already don't think I'm going to make it. So far, it's obnoxiously ableist. Also, for only being on the second page, I'm shocked at the logic issues. They're nothing but lazy writing, like the fmc snapping on neoprene gloves *before* tying her hair up. I really hope this gets better. *edit It doesn't.
Final Review (partial):
Five Quibbles:
This section isn't only for criticisms. It's merely for items that I felt something for other than "love" or some interpretation thereof.
1. Omg we get it, the mmc knows everything, inexplicably. I feel like someone is splaining this book to me.
2. The format this author uses to denote text messages is difficult to follow.
3. This one contains a huge cast of characters, which I often have trouble following and am doing so here.
4. Every inch of Head Cases screams types and tropes, from the neurodivergent detective with the dizzying intellect and social awkwardness, to the Dexter-style killer of killers, to the female side-kick who's literally described as a "ball-buster." Oh, but her friends call her that too, so it's not misogynistic at all.😒 I just don't think my worldview is compatible with the author's.
5. DNF @ p13 So many books, not enough time to read ones I don't like.
Rating: DNF
Recommend? mine is an outlier opinion, so don't let me stop you
Finished: Jan 31 '25
Format: digital arc, NetGalley
Thank you to the author John McMahon, publishers St. Martin's Press, and NetGalley for an advance digital copy of HEAD CASES. All views are mine.
---------------
Pre-Read notes
I *just* started reading this one and I already don't think I'm going to make it. So far, it's obnoxiously ableist. Also, for only being on the second page, I'm shocked at the logic issues. They're nothing but lazy writing, like the fmc snapping on neoprene gloves *before* tying her hair up. I really hope this gets better. *edit It doesn't.
Final Review (partial):
Five Quibbles:
This section isn't only for criticisms. It's merely for items that I felt something for other than "love" or some interpretation thereof.
1. Omg we get it, the mmc knows everything, inexplicably. I feel like someone is splaining this book to me.
2. The format this author uses to denote text messages is difficult to follow.
3. This one contains a huge cast of characters, which I often have trouble following and am doing so here.
4. Every inch of Head Cases screams types and tropes, from the neurodivergent detective with the dizzying intellect and social awkwardness, to the Dexter-style killer of killers, to the female side-kick who's literally described as a "ball-buster." Oh, but her friends call her that too, so it's not misogynistic at all.😒 I just don't think my worldview is compatible with the author's.
5. DNF @ p13 So many books, not enough time to read ones I don't like.
Rating: DNF
Recommend? mine is an outlier opinion, so don't let me stop you
Finished: Jan 31 '25
Format: digital arc, NetGalley
Thank you to the author John McMahon, publishers St. Martin's Press, and NetGalley for an advance digital copy of HEAD CASES. All views are mine.
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