Rh-null

by Marc Arginteanu

Feilx Hoenniker’s 4th Adventure

When the police prove powerless to stop a crowbar-wielding, skull-bashing madman, Felix steps up and vows to end the terror. As if contending with flesh and blood fiends weren’t enough, Felix manages to rouse the ire of a demon (who delights in tormenting the women Felix loves).

In his quest to deliver justice (earthly and other-worldly) Felix is joined by an irascible Staten Island Ferry captain and the czar of all chatterboxes. The trio twists through New York City subways, scales Staten Island's highest peak (to batter the ramparts of a medieval castle) and piles into a tricked-out van (for an expedition to the fanciest dinner club in the swamplands of New Jersey).

70 pages, Kindle Edition

Published December 13, 2024

About the author

Dr. Marc Arginteanu served as President of the New Jersey Neurosurgical Society, Associate Clinical Professor in Neurosurgery at Mount Sinai in New York City and Adjunct Instructor in Psychology at Florida International University in Miami.

Best Selling Nonfiction Author
Award Winning Fiction Author

Reviews

[Nazia Sultana · Rating 4 out of 5]

Rh-null by Marc Arginteanu is an engaging medical thriller centered on the rare Rh-null blood type, which becomes the target of greed and deadly schemes. Dr. Felix Hoenniker’s intelligence and courage shine as he unravels a complex web of deceit, with a standout moment being his tense confrontation with the antagonist in a hospital setting. The book’s unique premise, ethical dilemmas, and strong characters make it a compelling read for mystery and medical thriller enthusiasts.

[BigBlueSea · Rating 4 out of 5]

enjoyable

An enjoyable novella with likeable characters, nice pacing and good storytelling. Recommended and can be completed in one sitting. Thank you for allowing me to read it.

[Mary · Rating 5 out of 5]

This thriller storyline held
My attention from the first page to the last

[Tom Ventura · Rating 5 out of 5]

I got an advanced copy (lucky me!)
A worthy addition to the Felix pantheon. The twists and turns as he tracks down a crazed killer, while at the same time an evil demon called Preta is stalking him... wow.

[RK · Rating 5 out of 5]

Marc Arginteanu’s Rh-null takes readers on a complex and captivating journey into the world of medical mysteries, blending intricate scientific details with compelling moral challenges. As a reader with a deeper understanding of both the medical field and narrative structure, I found the exploration of the rare Rh-null blood type both fascinating and thought-provoking. The author successfully intertwines real scientific concepts with the story, making the plot both intellectually stimulating and emotionally engaging.

One of the most striking themes in the book is the ethical responsibility of medical professionals. The story delves into how advancements in science can be used for good or ill, raising questions about medical experimentation, human rights, and the fine line between progress and exploitation. The author does not shy away from showing the darker side of human ambition, emphasizing how greed and unethical practices can lead to devastating consequences.

This book offers a great deal of value to those interested in both medical ethics and thrilling crime fiction. It serves as a reminder of how important it is for professionals to be accountable for their actions and for individuals to question the motivations behind scientific breakthroughs. I believe this book has the potential to spark important conversations about the intersection of science, morality, and society.

[Logan · Rating 5 out of 5]

Gripping Thriller with a Unique Twist!

"Rh-null" is a masterfully crafted entry in the Felix Hoenniker Medical Murder Mystery series. From the very first page, the book draws you into a whirlwind of suspense, science, and intrigue. The rare and fascinating premise surrounding the Rh-null blood type is not only captivating but also a testament to the author’s knack for blending medical accuracy with gripping storytelling.

Felix Hoenniker is a compelling protagonist—brilliant yet relatable—whose quest for truth keeps you rooting for him as the stakes escalate. The plot is intricately layered, full of unexpected twists and turns that kept me glued to the pages late into the night. The pacing is perfect, balancing high-octane action with thought-provoking ethical dilemmas.

What sets this book apart is its ability to educate while entertaining. The medical details are well-researched and seamlessly woven into the narrative, making it a treat for fans of both thrillers and medical dramas. Even as part of a series, "Rh-null" stands on its own, though I highly recommend reading the previous books to fully appreciate the depth of Felix’s character and journey.

If you’re a fan of medical mysteries, unpredictable plots, and characters that linger in your mind long after the last page, "Rh-null" is a must-read. I can’t wait to see what’s next for Felix Hoenniker!

[Sarah Jose · Rating 5 out of 5]

Rh-null by Marc Arginteanu is a thrilling medical mystery that goes beyond just solving a crime. It digs into the important ethical questions surrounding scientific discoveries. The main character, Felix Hoenniker, is a detective with a background in medicine. The story centers around the rare Rh-null blood type, which becomes the focus of a dangerous medical conspiracy. As the plot unfolds, it makes you think about how far some people will go for power and knowledge, and what happens when science is used for the wrong reasons.

The book is filled with moments that make you reflect on issues like greed, ambition, and how easily science can be misused. A key takeaway is the quote: “With knowledge comes responsibility. Without it, chaos reigns.” This really hit home, reminding me that science should always be used for the greater good, not for selfish gains. I also appreciate how the author broke down complex medical details in a way that didn’t feel overwhelming. It made the story not only entertaining but also intellectually stimulating. If you're into mysteries that challenge you to think about right and wrong, Rh-null is definitely worth reading.

[Naveen Kumar · Rating 4 out of 5]

This fourth book in the Felix Hoenniker Medical Murder Mystery series by Marc Arginteanu, is a gripping, fast-paced read that blends medical drama with supernatural intrigue.

This time, neurosurgeon Felix Hoenniker finds himself caught in a terrifying web of mysteries. A violent attacker is on the loose, wielding a crowbar and leaving chaos in his wake. When the authorities fail to make progress, Felix decides to take matters into his own hands. But things take a dark turn when Preta, a demonic presence, starts targeting the women Felix cares about, adding a chilling supernatural twist to the story.

What makes this book stand out is its pacing. At just around 70 pages, it’s perfect for a quick, suspense-filled escape. The writing pulls you in, keeping you on edge as you follow Felix through a mix of moral dilemmas, intense action, and emotional stakes. The supernatural elements add an exciting layer, making it more than just your average medical mystery.

If you’re a fan of medical mysteries with a twist—or just looking for a thrilling read with a dash of the paranormal, this is the best.

[Mohd Aarif · Rating 5 out of 5]

Marc Arginteanu's Rh-null is a gripping medical mystery that does more than merely solve a crime. It explores the significant moral dilemmas raised by scientific advancements. Felix Hoenniker, the protagonist, is a detective with medical training. The narrative revolves around a hazardous medical conspiracy that targets the rare Rh-null blood type. As the story progresses, you are forced to consider the lengths some will go to in order to gain knowledge and power, as well as the consequences of misusing science.

There are many points in the novel that cause you to consider things like ambition, greed, and how easily science can be abused. The saying, "With knowledge comes responsibility," is a crucial lesson. In its absence, anarchy reigns. This struck a deep chord with me, serving as a reminder that science should never be applied for personal benefit but rather for the sake of society. I really like how the author simplified intricate medical information without making it seem overpowering. Because of this, the story was both amusing and thought-provoking. Rh-null is absolutely worth reading if you enjoy mysteries that make you consider morality.

[Kim · Rating 5 out of 5]

The fourth novel in the Felix Hoenniker Medical Murder Mystery collection by Marc Arginteanu involves a fast-paced, riveting read that fuses medicine and supernatural melodrama.

Neurosurgeon Felix Hoenniker now finds himself within a terrifying web of mysteries. Violent crowbar wielding mayhem ensues because an attacker has escaped. When authorities fail to do progress, it is up to Felix Hoenniker to take matters into his own hands. But when demonic presence Preta starts targeting women care about Felix, adds a supernatural twist to the otherwise chilling tale.

That's because the book stands beside pacing ratings. At just about 70 pages, it could be inhaled in one quick, suspenseful engagement. Yet at the same time, the prose draws you onto the edge, as Felix can be found traversing some sometimes thorny moral ground, frantic physical action, and sharpened emotional stakes. Supernatural edges add just that much more excitement to make this far more than the average medical mystery.

This one beats all others, for those who love to read medical mysteries with a twist, and all those who would like to read a thrill of paranormal.

[Eva Mae · Rating 5 out of 5]

I just finished reading Rh-null (Felix Hoenniker Medical Murder Mystery Book 4) by Marc Arginteanu, and I really enjoyed it. The story is full of suspense and keeps you hooked from the beginning. The main character, Felix Hoenniker, is a medical detective, which is really cool because the story mixes science with mystery. There’s a lot about blood types and medical cases, which might sound complicated, but it’s easy to follow.

What I found most interesting was how the book showed the importance of ethics in medicine. It also made me think about how powerful science can be, but it’s important to use it for good. The author does a great job of explaining these serious topics in a way that anyone can understand, even if you’re not into science.

This book can teach you about the value of doing the right thing and how sometimes people use knowledge for bad reasons. It shows how a person’s decisions can have huge consequences. I think this book would be great for anyone who likes mysteries with a deeper message about life and science.

[Lahari · Rating 5 out of 5]

Rh-null by Marc Arginteanu is the 4th Adventure Installment of Felix Heonniker, which takes up the story in continuance from the 3rd Book. The 70 pages short story revolving around Murder Mystery keeps the reader hooked, especially with the satirical tone of Gina.I would suggest reading through the previous 3 adventures as well to get a good grasp of the storyline.One of the most striking themes in the book is the ethical responsibility of medical professionals. The story delves into how advancements in science can be used for good or ill, raising questions about medical experimentation, human rights, and the fine line between progress and exploitation. The author does not shy away from showing the darker side of human ambition, emphasizing how greed and unethical practices can lead to devastating consequences. New suspects and characters give a refreshing touch, although chapter 7 runs a sense of fear down the spine.The book covers 8 chapters, easy to complete in max. 2 hours. Overall, a good read for the readers who love the suspense genre.

[Christina Wilson · Rating 5 out of 5]

Marc Arginteanu's Rh-null is a gripping medical mystery that explores the moral dilemmas surrounding scientific advancements. The narrative follows medically trained detective Felix Hoenniker as he unearths a perilous plot involving the uncommon Rh-null blood type. The storyline examines the lengths humans will go to in order to gain knowledge and power, highlighting the dangers of applying science for nefarious or destructive ends. The thought-provoking passages that emphasize ambition, avarice, and the abuse of science are what set this book apart. "With knowledge comes responsibility" is a saying that sticks in my memory. In its absence, anarchy reigns. This made me realize how crucial it is to apply science for the greater benefit rather than for selfish ends. The novel is both interesting and educational because the author makes difficult medical concepts simple to understand.

Rh-null is a great option if you like riddles that provoke moral and ethical reflection. You'll remember this exciting and thought-provoking book long after you've finished reading it.

[mona · Rating 5 out of 5]

Rh-null (Felix Hoenniker Medical Murder Mystery Book 4) by Marc Arginteanu continues the thrilling adventures of Felix Hoenniker, a neurosurgeon turned paranormal investigator. In this installment, Felix faces a crowbar-wielding maniac and a sinister demon threatening the women he loves.

The story blends medical intrigue with supernatural elements, keeping readers on edge. Chapter 2, titled Rh-null, stands out as it delves into the fascinating concept of the rare blood type Rh-null, highlighting its medical implications. The quirky supporting characters—Gina, DD, and Alexie—bring humor and lightness to the intense narrative. Gina's blunt, playful nature is especially entertaining.

At just 2-3 hours to read, this book is a quick yet satisfying dive into a world of mystery and wit. If you enjoy fast-paced medical thrillers with a touch of the supernatural, this series is worth exploring.

[Kimberly Harris · Rating 5 out of 5]

Marc Arginteanu’s Rh-null takes readers on an exciting journey into the rare world of medical mysteries. The story explores the unique Rh-null blood type, combining real science with an engaging and emotional plot. It’s both fascinating and easy to follow, even if you’re new to medical topics.

The moral decisions that medical professionals must make are a major issue in the novel. It examines the potential benefits and drawbacks of science, posing significant queries on medical research, human rights, and the perils of avarice. The narrative urges readers to consider the responsibilities that accompany scientific advancement by demonstrating how ambition can result in errors with grave repercussions.

This book is a great pick for anyone who enjoys thrilling stories and wants to explore deeper questions about science and morality. Rh-null is a powerful reminder of why ethical decisions matter in the world of medicine.

[Surbhi Agrawal · Rating 5 out of 5]

Rh-null(book 4) by Helix Heonniker is the 4th book in the series. As we know from the previous parts of the book, Felix is a neurosurgeon whose side gig is solving Paranormal Medical Murder Mysteries.

Felix works as a Neurosurgeon at the Metro General which is a number 1 trauma center.

I liked the chapter 2 in this book titles Rh-null. Lucie Manette was Felix's latest inductee. Hector who is a work collegue of Felix tells him that Rh-null is a bloodtype and they do not have this bloodtype available in their blood bank. Also, a Rh-null patient can't be transfused with even the universal donor "O" blood group.

This book is very short. Once can finish it within 2-3 hours. Gina, DD, Alexie are fun characters that are continued in this part too. They add satire, humour to the story. Especially Gina is vey blunt add playfulness to the story.

[Alexa Jacks · Rating 5 out of 5]

Rh-null by Helix Heonniker is the fourth volume of a thrilling series. As established in earlier volumes, Felix is a neurosurgeon who also dabbles in solving Paranormal Medical Murder Mysteries. Felix is a neurosurgeon found working at Metro General, which is known throughout the region as the best trauma center.

Out of all, Chapter 2 of this book, Rh-null, is a little exciting. Lucie Manette becomes Felix's new recruit. From Hector, one of the colleagues of Felix, Rh-null is said to be a rare blood type and therefore not available in their blood bank. Besides, a patient cannot even get transfusion from a universal donor "O" blood type if he is of Rh null.

It's a very short book, taking probably just about 2-3 hours to read. The same comical trio-Gina, DD, and Alexie-repeat in this episode. Gina particularly brings a refreshing kind of bluntness and playfulness into the fray.

[Khalil Ahmed · Rating 5 out of 5]

The fourth book in the series is Rh-null (book 4), written by Helix Heonniker. As previously mentioned in the novel, Felix works as a neurosurgeon and solves paranormal medical murder mysteries as a side gig.

Felix is employed at Metro General, a top trauma center, as a neurosurgeon.

The second chapter of this book, Rh-null, was enjoyable to me. Felix's most recent entrant was Lucie Manette. Felix's coworker Hector informs him that the blood type Rh-null is not accessible at their blood bank. Additionally, even the universal donor "O" blood group cannot be utilized to transfuse a patient who is Rh-null.

It's a really short book. It can be completed in two to three hours. This section also continues the hilarious characters Gina, DD, and Alexie. They give the story humor and satire. Gina in particular is quite direct, which adds humor to the narrative.

[Rebecca Taylor · Rating 5 out of 5]

Rh-null by Marc Arginteanu is the fourth thrilling adventure in the Felix Hoenniker series, continuing seamlessly from the previous book. This short, 70-page story delivers a captivating murder mystery that keeps readers hooked, especially with Gina’s sharp and satirical commentary adding a delightful edge to the plot. While you can enjoy this book on its own, starting with the earlier adventures will give you a deeper understanding of the storyline and characters. The new suspects and plot twists bring a fresh energy to the series, and chapter 7, in particular, stands out with its spine-tingling suspense. The book’s eight chapters make it a quick and engaging read, easily finished in two hours. If you love fast-paced mysteries with intriguing twists, Rh-null is a must-read that won’t disappoint.

[Jennifer Miller · Rating 5 out of 5]

Marc Arginteanu’s Rh-null is a gripping medical thriller that combines fascinating science with deep moral questions. The story focuses on the rare Rh-null blood type, weaving real medical details into an exciting and emotional plot.

A key theme in the book is the ethical responsibility of doctors and scientists. It shows how scientific breakthroughs can be used to help or harm, raising important questions about medical experiments, human rights, and the dangers of greed. The story highlights the fine line between progress and exploitation, making readers think about the consequences of unchecked ambition.

If you enjoy stories that mix science with ethics and suspense, Rh-null is a fantastic choice. It challenges you to consider the role of morality in science and leaves you with plenty to think about long after the final page.

[Heather Anderson · Rating 5 out of 5]

Rh-null by Marc Arginteanu is the fourth adventure in the Felix Hoenniker series, continuing the story from the third book. This 70-page short story is a gripping murder mystery that keeps readers hooked with its suspenseful plot and sharp, satirical tone, especially through the character Gina. For a better understanding of the storyline, I recommend reading the previous three adventures first. The addition of new suspects and characters adds a fresh twist, and chapter 7 stands out for its spine-chilling atmosphere. With just eight chapters, the book is a quick read, taking around two hours to finish. It’s an enjoyable pick for fans of suspense and mystery, offering a compact but thrilling experience.

[Levi Graham · Rating 5 out of 5]

The fourth book in the Felix Hoenniker series, Rh-null by Marc Arginteanu, carries on the detective's exploits with yet another gripping mystery. This brief, 70-page story is full with tension and infused with Gina's scathing, sardonic wit, which gives the story a distinctive edge. Although the book is enjoyable on its own, reading the first three chapters will help you better comprehend the plot and characters. The plot is kept interesting by the addition of new suspects and plot twists, and chapter 7 is notable for its powerful and unsettling scenes that stick with you. This book has eight chapters, making it easy to finish in two hours. Rh-null is a really captivating option if you enjoy fast-paced narratives and intriguing secrets.

[Shubhadarshani · Rating 5 out of 5]

The story in this 4th part continues in the hospital where Dr. Felix had to perform a brain surgery on a patient called Charlie. Lee, Miranda, Hector were support staff on Charlie's brain surgery however Charlie couldn't survive for more than 24 hours after the surgery since his brain was too damaged to recover.

Another patient Lucie got admitted for brain surgery where we get to know that Lucie has a rare blood type Rh-null.

Story continues finding the pattern & common thread between these patients. It is so intriguing that I hope the author adds another part to this thrilling mystery series.

[Yashraj · Rating 5 out of 5]

Rh-null by Marc Arginteanu is the 4th part in protagonist's Dr. Felix Heonikkar's medical mystery series.

Dr. Hoenniker is a brilliant neurosurgeon with exceptional problem-solving skills. He is driven to uncover the truth, often taking risks to pursue his investigations.

Felix is attentive to details, often noticing clues that others miss. He exposes complex web of deceit and corruption within hospital and medical agencies risking his own life to bring justice and accountability to the medical community.

Overall, Dr. Felix Hoenniker is a complex, intelligent, and determined protagonist who drives the plot of Marc Arginteanu's medical mystery series.

[Jaspreet Singh · Rating 4 out of 5]

Rh-null by Marc Arginteanu is the 4th Adventure Installment of Felix Heonniker, which takes up the story in continuance from the 3rd Book. The
70 pages short story revolving around Murder Mystery keeps the reader hooked, especially with the satirical tone of Gina.

I would suggest reading through the previous 3 adventures as well to get a good grasp of the storyline. New suspects and characters give a refreshing touch, although chapter 7 runs a sense of fear down the spine.

The book covers 8 chapters, easy to complete in max. 2 hours. Overall, a good read for the readers who love the suspense genre.

[emily · Rating 5 out of 5]

Marc Arginteanu’s Rh-null is a captivating blend of medical mystery and ethical exploration, centered around the rare Rh-null blood type. The book masterfully intertwines real science with a gripping narrative, raising thought-provoking questions about medical experimentation, human rights, and the fine line between progress and exploitation. It highlights the ethical responsibilities of medical professionals and the dangers of greed and unethical practices. Perfect for fans of medical ethics and crime fiction, this thought-stirring novel sparks important conversations about the intersection of science, morality, and society.

[Grace Anderson · Rating 4 out of 5]

Felix Hoenniker is back with a bang in his fourth adventure, and this time, he’s taking on both human and supernatural foes. From chasing a crazed, crowbar-wielding criminal through the streets to confronting a demon with a personal vendetta, Felix’s journey is as thrilling as it is unpredictable. What really keeps you hooked is the quirky team he assembles—a feisty Staten Island Ferry captain and the ultimate chatterbox. Together, they navigate through subways, castles, and even a swanky New Jersey club in their quest for justice. It’s an action-packed ride full of humor, suspense, and Felix’s signature determination.

[Gouri Gupta · Rating 5 out of 5]

This gritty, fast-paced mystery with supernatural twists captivates from the start. Gina, haunted by her encounter with the demon Preta, recalls how it drove Carl Generelli to murder, her sadness palpable as she smokes to numb the pain.

The protagonist, grappling with guilt and loss, embarks on a mission to save a life in a world filled with danger and deception. The scene at Rick's, an opulent bar where gold bullion replaces cash, adds a surreal touch to the story's dark undertone.

The blend of dark humor, compelling characters, and a thrilling plot makes this an engaging read for fans of suspense and the supernatural.

[Alex Young · Rating 4 out of 5]

In Felix Hoenniker’s fourth escapade, the stakes are higher, the villains more menacing, and the adventures wilder than ever. From battling a deranged criminal terrorizing the city to facing off against a demon determined to wreak havoc on Felix’s personal life, the story is a rollercoaster of action and emotion. The camaraderie between Felix and his oddball team brings lighthearted moments to this gripping tale. The vividly described settings—from gritty New York subways to a medieval castle on Staten Island—make it feel like you’re right there with them. If you’re a fan of fast-paced mysteries with a supernatural twist, this book won’t disappoint.

[Lily Smith · Rating 4 out of 5]

What happens when a madman with a crowbar meets Felix Hoenniker? Chaos, courage, and one unforgettable adventure. In this fourth installment, Felix is on a mission to stop a wave of terror while also dealing with a demon who seems to have a personal grudge against him. The mix of suspense and humor is spot on, thanks to Felix’s eccentric companions—a bold ferry captain and a nonstop talker who keeps things lively. The action spans from dark subway tunnels to a castle siege and even a swampland dinner club which makes it a whirlwind of excitement. Felix’s ability to balance grit and charm is what makes this series a standout.