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Kate Preacher #2
Unstoppable
Betrayal in Paris. Survival in Africa. The world’s deadliest game has a new player.
Former CIA analyst Kate Preacher returns to Paris searching for answers to the terrorist attack that shattered her world—only to land in the crosshairs of a sniper who’s always one step ahead. As the conspiracy unravels, Kate is pulled into a plot far bigger than she imagined—and hunted by an enemy closer than she thinks.
When a trusted ally is ambushed and left for dead, Kate realizes she’s closing in on her target—but she’s also next on the list. Her pursuit of this deadly phantom takes her across borders and into Africa’s most dangerous battlegrounds, where warlords, mercenaries, and corrupt powers collide over the fate of a nation.
Every enemy hides a secret. Every ally has an agenda. Every move Kate makes risks igniting a firestorm that could topple a fragile government.
With seconds to spare and a sniper locked on target, Kate must make one final move—risk everything or watch an emerging democracy crumble.
Unstoppable, the pulse-pounding sequel to Relentless, is a rollercoaster of suspense, heart-stopping action, and jaw-dropping twists. With smart, fearless characters, high-stakes conflict, and emotional depth, Kate Preacher’s journey will keep you riveted until the final shocking conclusion.
BUY YOUR COPY NOW and join Kate on her most intense mission yet!
Former CIA analyst Kate Preacher returns to Paris searching for answers to the terrorist attack that shattered her world—only to land in the crosshairs of a sniper who’s always one step ahead. As the conspiracy unravels, Kate is pulled into a plot far bigger than she imagined—and hunted by an enemy closer than she thinks.
When a trusted ally is ambushed and left for dead, Kate realizes she’s closing in on her target—but she’s also next on the list. Her pursuit of this deadly phantom takes her across borders and into Africa’s most dangerous battlegrounds, where warlords, mercenaries, and corrupt powers collide over the fate of a nation.
Every enemy hides a secret. Every ally has an agenda. Every move Kate makes risks igniting a firestorm that could topple a fragile government.
With seconds to spare and a sniper locked on target, Kate must make one final move—risk everything or watch an emerging democracy crumble.
Unstoppable, the pulse-pounding sequel to Relentless, is a rollercoaster of suspense, heart-stopping action, and jaw-dropping twists. With smart, fearless characters, high-stakes conflict, and emotional depth, Kate Preacher’s journey will keep you riveted until the final shocking conclusion.
BUY YOUR COPY NOW and join Kate on her most intense mission yet!
474 pages, Kindle Edition
First published March 18, 2025
70 people are currently reading
26 people want to read
About the author
Michael Maloof
3 books45 followersWith the publication of Unstoppable, the highly anticipated sequel to his award-winning debut novel Relentless, Michael Maloof cements his place as a compelling new voice in the world of globe-trotting thrillers.
Born with an insatiable curiosity and a genetic case of wanderlust, Michael brings a rich tapestry of personal experiences to the page, crafting heart-pounding international adventures that blur the line between fiction and reality.
His wanderlust has taken him to over forty countries across six continents, each trip adding another chapter to his already rich life story. Michael’s adventures read like a thriller novel in themselves: from dredging for gold in Honduras and hunting Mayan artifacts in Guatemala to acquiring uncut diamonds in Liberia and dodging an elephant charge in Kenya.
Among his most treasured experiences are the opportunities to train alongside Navy SEALs, Marine Raiders, Army Rangers, Green Berets, and the CIA—gaining firsthand insights that infuse his writing with unparalleled authenticity.
A serial entrepreneur, international adventurer, and self-confessed Starbucks Frappuccino addict, Michael invites readers into a world of high-stakes intrigue and relentless action. He’s not just writing thrillers—he’s lived them.
Born with an insatiable curiosity and a genetic case of wanderlust, Michael brings a rich tapestry of personal experiences to the page, crafting heart-pounding international adventures that blur the line between fiction and reality.
His wanderlust has taken him to over forty countries across six continents, each trip adding another chapter to his already rich life story. Michael’s adventures read like a thriller novel in themselves: from dredging for gold in Honduras and hunting Mayan artifacts in Guatemala to acquiring uncut diamonds in Liberia and dodging an elephant charge in Kenya.
Among his most treasured experiences are the opportunities to train alongside Navy SEALs, Marine Raiders, Army Rangers, Green Berets, and the CIA—gaining firsthand insights that infuse his writing with unparalleled authenticity.
A serial entrepreneur, international adventurer, and self-confessed Starbucks Frappuccino addict, Michael invites readers into a world of high-stakes intrigue and relentless action. He’s not just writing thrillers—he’s lived them.
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Displaying 1 - 15 of 15 reviews
March 23, 2025
Kate Preacher is “Unstoppable.”
That’s not hyperbole; it’s fact. Her husband proclaimed her so one fateful day, and it remains true of her very core nature. She is brilliant, with a pedigree few people in the world could come close to. She’s also the foe that no one wants, and she’s on a mission that she will not deviate from until it’s completed.
‘Vengeance may be the lord’s, but beware the woman with nothing left to lose.’ —Katherine Preacher
Michael Maloof’s debut novel “Relentless” introduced the indomitable Kate Preacher as a strong, fierce, valiant woman very much in love with her husband, Jake. Theirs has been a storybook romance. Kate is former CIA, a world-class chess player, and the only woman who could turn the head of former Navy SEAL Jake Church. “Relentless” gave thriller fans a breathtaking story that engaged readers with page one and never let go. With book two, “Unstoppable,” Michael Malloof proves he’s not a one-hit wonder as he provides his burgeoning legion of fans with another nail-biting roller coaster ride full of grit, action, honor, teamwork, and strong-as-steel characters.
“Unstoppable” takes readers to Paris on the hunt for a traitorous killer, then on to a small country in Africa where the stakes are high, and the natural resources seem to carry more value than the lives of its people. Themes of loyalty, selflessness, and the reverence of life run throughout this monumental story line. The remarkable characters who display courage and strength are balanced by a host of despicable, soul-sucking bad guys who see the world as theirs to plunder. Life is cheap to them and power is essential. They’re not always easy to spot as the plot unfolds.
The storyline is magnetic as a group of genuine heroes realize it’s up to them to do the impossible. The odds aren’t good (okay- they’re terrible), but there’s no one else to stand in this gap. But these men and women are the one-percenters who have the training and the experience to do what no one else can or will do, and will put their lives on the line to get it done.
The Kate Preacher Thriller Series has everything fans of this genre expect: genuinely compelling characters, a solid fast-paced storyline, unexpected twists, bad politicians, and some seriously high stakes. There may even be a touch of the paranormal, as a Maasai named Nuru and a prowling lion leave their marks.
‘A lion cannot be anything but a lion.’ –Nuru
Michael Maloof’s “Unstoppable” is decidedly so, as fans will not be able to put this one down. Those who have read the first book will find answers to questions they didn’t know they had in this novel. Whether you’ve read the first book or not, “Unstoppable” can easily stand on its own as witness to Mr. Maloof’s literary prowess. However, readers will find the most enjoyment if they begin with book one, “Relentless,” to fully understand the depth of these characters and their history. However you choose to approach it, do not miss Michael Maloof’s “Unstoppable.” It’s high-octane reading at its best.
That’s not hyperbole; it’s fact. Her husband proclaimed her so one fateful day, and it remains true of her very core nature. She is brilliant, with a pedigree few people in the world could come close to. She’s also the foe that no one wants, and she’s on a mission that she will not deviate from until it’s completed.
‘Vengeance may be the lord’s, but beware the woman with nothing left to lose.’ —Katherine Preacher
Michael Maloof’s debut novel “Relentless” introduced the indomitable Kate Preacher as a strong, fierce, valiant woman very much in love with her husband, Jake. Theirs has been a storybook romance. Kate is former CIA, a world-class chess player, and the only woman who could turn the head of former Navy SEAL Jake Church. “Relentless” gave thriller fans a breathtaking story that engaged readers with page one and never let go. With book two, “Unstoppable,” Michael Malloof proves he’s not a one-hit wonder as he provides his burgeoning legion of fans with another nail-biting roller coaster ride full of grit, action, honor, teamwork, and strong-as-steel characters.
“Unstoppable” takes readers to Paris on the hunt for a traitorous killer, then on to a small country in Africa where the stakes are high, and the natural resources seem to carry more value than the lives of its people. Themes of loyalty, selflessness, and the reverence of life run throughout this monumental story line. The remarkable characters who display courage and strength are balanced by a host of despicable, soul-sucking bad guys who see the world as theirs to plunder. Life is cheap to them and power is essential. They’re not always easy to spot as the plot unfolds.
The storyline is magnetic as a group of genuine heroes realize it’s up to them to do the impossible. The odds aren’t good (okay- they’re terrible), but there’s no one else to stand in this gap. But these men and women are the one-percenters who have the training and the experience to do what no one else can or will do, and will put their lives on the line to get it done.
The Kate Preacher Thriller Series has everything fans of this genre expect: genuinely compelling characters, a solid fast-paced storyline, unexpected twists, bad politicians, and some seriously high stakes. There may even be a touch of the paranormal, as a Maasai named Nuru and a prowling lion leave their marks.
‘A lion cannot be anything but a lion.’ –Nuru
Michael Maloof’s “Unstoppable” is decidedly so, as fans will not be able to put this one down. Those who have read the first book will find answers to questions they didn’t know they had in this novel. Whether you’ve read the first book or not, “Unstoppable” can easily stand on its own as witness to Mr. Maloof’s literary prowess. However, readers will find the most enjoyment if they begin with book one, “Relentless,” to fully understand the depth of these characters and their history. However you choose to approach it, do not miss Michael Maloof’s “Unstoppable.” It’s high-octane reading at its best.
June 28, 2025
Unstoppable is exactly that—nonstop action, layered twists, and a heroine you can’t help but root for. Kate Preacher returns stronger, smarter, and more determined than ever. From the gritty streets of Paris to the high-stakes battlegrounds of Africa, the pacing never lets up.
The writing is sharp, the tension is high, and every chapter peels back another layer of betrayal, danger, and moral complexity. I loved how the story balanced intelligence and emotional stakes—Kate isn’t just chasing shadows, she’s facing ghosts from her past and questioning every alliance along the way.
The political undertones and international setting added realism, and the plot twists? Jaw-dropping. Just when I thought I had it figured out, the story flipped everything on its head.
If you enjoyed Relentless, this sequel raises the bar. And if you’re a fan of spy thrillers with smart, tough female leads and globe-spanning intrigue—this one’s a must-read.
Highly recommend for fans of Vince Flynn, Lee Child, or Gregg Hurwitz. Can’t wait to see what Kate faces next!
The writing is sharp, the tension is high, and every chapter peels back another layer of betrayal, danger, and moral complexity. I loved how the story balanced intelligence and emotional stakes—Kate isn’t just chasing shadows, she’s facing ghosts from her past and questioning every alliance along the way.
The political undertones and international setting added realism, and the plot twists? Jaw-dropping. Just when I thought I had it figured out, the story flipped everything on its head.
If you enjoyed Relentless, this sequel raises the bar. And if you’re a fan of spy thrillers with smart, tough female leads and globe-spanning intrigue—this one’s a must-read.
Highly recommend for fans of Vince Flynn, Lee Child, or Gregg Hurwitz. Can’t wait to see what Kate faces next!
April 19, 2025
Kate Preacher is “Unstoppable.” That’s not hyperbole; it’s fact. Her husband proclaimed her so one fateful day, and it remains true of her very core nature. She is brilliant, with a pedigree few people in the world could come close to. She’s also the foe that no one wants, and she’s on a mission that she will not deviate from until it’s completed.
‘Vengeance may be the lord’s, but beware the woman with nothing left to lose.’
--Katherine Preacher
Michael Maloof’s debut novel “Relentless” introduced the indomitable Kate Preacher as a strong, fierce, valiant woman very much in love with her husband, Jake. Theirs has been a storybook romance. Kate is former CIA, a world-class chess player, and the only woman who could turn the head of former Navy SEAL Jake Church. “Relentless” gave thriller fans a breathtaking story that engaged readers with page one and never let go. With book two, “Unstoppable,” Michael Malloof proves he’s not a one-hit wonder as he provides his burgeoning legion of fans with another nail-biting roller coaster ride full of grit, action, honor, teamwork, and strong-as-steel characters.
“Unstoppable” takes readers to Paris on the hunt for a traitorous killer, then on to a small country in Africa where the stakes are high, and the natural resources seem to carry more value than the lives of its people. Themes of loyalty, selflessness, and the reverence of life run throughout this monumental story line. The remarkable characters who display courage and strength are balanced by a host of despicable soul-sucking bad guys who see the world as theirs to plunder. Life is cheap to them and power is essential. They’re not always easy to spot as the plot unfolds.
The storyline is compelling as a group of genuine heroes realize it’s up to them to do the impossible. The odds aren’t good (okay- they’re terrible), but there’s no one else to stand in this gap. But these men and women are the one-percenters who have the training and the experience to do what no one else can or will do, and will put their lives on the line to get it done.
The Kate Preacher Thriller Series has everything fans of this genre expect: genuinely compelling characters, a solid fast-paced storyline, unexpected twists, bad politicians, and some seriously high stakes. There may even be a touch of the paranormal as a Maasai named Nuru and a prowling lion leave their marks.
‘A lion cannot be anything but a lion.’
--Nuru
Michael Maloof’s “Unstoppable” is decidedly so, as fans will not be able to put this one down. Those who have read the first book will find answers to questions they didn’t know they had in this novel. Whether you’ve read the first book or not, “Unstoppable” can easily stand on its own as witness to Mr. Maloof’s literary prowess. However, readers will find the most enjoyment if they begin with book one, “Relentless,” to fully understand the depth of these characters and their history. However you choose to approach it, do not miss Michael Malloof’s “Unstoppable,” high-octane reading at its best.
‘Vengeance may be the lord’s, but beware the woman with nothing left to lose.’
--Katherine Preacher
Michael Maloof’s debut novel “Relentless” introduced the indomitable Kate Preacher as a strong, fierce, valiant woman very much in love with her husband, Jake. Theirs has been a storybook romance. Kate is former CIA, a world-class chess player, and the only woman who could turn the head of former Navy SEAL Jake Church. “Relentless” gave thriller fans a breathtaking story that engaged readers with page one and never let go. With book two, “Unstoppable,” Michael Malloof proves he’s not a one-hit wonder as he provides his burgeoning legion of fans with another nail-biting roller coaster ride full of grit, action, honor, teamwork, and strong-as-steel characters.
“Unstoppable” takes readers to Paris on the hunt for a traitorous killer, then on to a small country in Africa where the stakes are high, and the natural resources seem to carry more value than the lives of its people. Themes of loyalty, selflessness, and the reverence of life run throughout this monumental story line. The remarkable characters who display courage and strength are balanced by a host of despicable soul-sucking bad guys who see the world as theirs to plunder. Life is cheap to them and power is essential. They’re not always easy to spot as the plot unfolds.
The storyline is compelling as a group of genuine heroes realize it’s up to them to do the impossible. The odds aren’t good (okay- they’re terrible), but there’s no one else to stand in this gap. But these men and women are the one-percenters who have the training and the experience to do what no one else can or will do, and will put their lives on the line to get it done.
The Kate Preacher Thriller Series has everything fans of this genre expect: genuinely compelling characters, a solid fast-paced storyline, unexpected twists, bad politicians, and some seriously high stakes. There may even be a touch of the paranormal as a Maasai named Nuru and a prowling lion leave their marks.
‘A lion cannot be anything but a lion.’
--Nuru
Michael Maloof’s “Unstoppable” is decidedly so, as fans will not be able to put this one down. Those who have read the first book will find answers to questions they didn’t know they had in this novel. Whether you’ve read the first book or not, “Unstoppable” can easily stand on its own as witness to Mr. Maloof’s literary prowess. However, readers will find the most enjoyment if they begin with book one, “Relentless,” to fully understand the depth of these characters and their history. However you choose to approach it, do not miss Michael Malloof’s “Unstoppable,” high-octane reading at its best.
April 26, 2025
This thrilling and intricate follow-up to the series debut will keep readers glued to their seats and begging for more!
Unstoppable is the second book in author Michael Maloof's exceptional Kate Preacher Thriller series, building on the intrigue and, perhaps, even surpassing the intensity of the series debut. Kate Preacher, although still reeling from her husband's murder during an armed attack on a Parisian café, is determined to get to the truth, expose those responsible, and extract her own vengeance. Kate's husband warned his killer that she would be unstoppable, but so are the thrills readers will experience from this story.
Only days have elapsed since Jake Church was gunned down by a long-range sniper's bullet, but that is enough time for his widow, former CIA analyst Kate Preacher, to gather her resources and head back to Paris to prove her theory that the brutal café attack which took Jake's life and made him a national hero was no terroristic act but a calculated assassination when he got too close to the perpetrators involved in a high-level and powerful international crime coalition. Even after having read the previous novel, I was still thrilled by her tactical skills, knowledge, and the digital forensics used in the story. Key characters from book one return to lend their considerable expertise while surprising new allies and hidden antagonists enter the picture. The loyalty and determination of Jake's former team members are on full display and, at times, evoke gut-wrenching admiration.The plot is fast-paced as the story hits the ground running, and the action and intrigue are unrelenting and non-stop. Dangerous secrets, hints of unknown agendas, and shocking plot twists kept me on the edge of my seat as Kate got ever closer to her goal, and those working against her tried to stop her or, at a minimum, manage her discoveries and limit the consequences. When loyalty, friendship, and her concern for another character's safety take Kate from Paris to an emerging African country, the stakes rise when evil intentions become clear and broaden to affect even more innocents, and storylines cleverly converge.
While this is the second Kate Preacher novel, the author subtly weaves in enough backstory for readers new to the series to read this book as a standalone. I recommend UNSTOPPABLE and the Kate Preacher Thriller series to thriller fans.I voluntarily reviewed this after receiving an Advanced Review Copy from Reedsy Discovery.
August 1, 2025
Very good follow up to his debut novel Relentless. Michael Maloof is a new voice to the thriller genre and writes crisp, descriptive, action-packed stories. His heroine, Kate Preacher is a great character and his Settings in Africa are very well written. Pick up this series today, you won't be disappointed.
August 12, 2025
Amazing, stunning, wild ride!
So enjoyed the trip to Africa! The story kept up an incredible pace. It also spoke to some dire issues facing us these days. Exploiting others for personal gain is more rampant than ever. Great read!
So enjoyed the trip to Africa! The story kept up an incredible pace. It also spoke to some dire issues facing us these days. Exploiting others for personal gain is more rampant than ever. Great read!
October 27, 2025
Absolutely brilliant
This second book in the series had me hooked from the first to last chapter, can't wait for the next instalment, a must read for anyone who loves a strong action heroine!
This second book in the series had me hooked from the first to last chapter, can't wait for the next instalment, a must read for anyone who loves a strong action heroine!
March 3, 2025
I thoroughly enjoyed this book. Tons of action and a few twists. Now I need to read 'Relentless', then reread 'Unstoppable'.
March 13, 2025
In this second outstanding book, Kate goes back to Paris to try and solve a deadly and dangerous mystery. Brilliant as always that will keep you reading to find out what will happen.
March 21, 2025
An exciting book filled with twists and turns. Kate has to determine whether she has friends or enemies surrounding her. Sometimes it's hard to tell as we get pulled along with her.
March 21, 2025
Great follow-up to the book. It was a page turner although the last quarter of the book was a big draggy. Nevertheless, can't wait for the next chapter of this series
April 19, 2025
The 2nd book is just as fabulous as the 1st!
September 21, 2025
loved it
A great military thriller. Great characters and plenty of action. Can’t wait for the next one! Hopefully it’s out soon.
A great military thriller. Great characters and plenty of action. Can’t wait for the next one! Hopefully it’s out soon.
December 15, 2025
Another Kate adventure. Very good intelligence
work along with enough action to keep it moving.
Looking forward to book three with the continuing saga of
RILEE and the Coalition.
work along with enough action to keep it moving.
Looking forward to book three with the continuing saga of
RILEE and the Coalition.
April 9, 2025
Kate Preacher is amongst friends with Mitch Rapp, Scot Harvath and James Reece. She is at the stop of her game in Unstoppable – I did not want the book to end and I cannot wait for her next adventure.
Displaying 1 - 15 of 15 reviews