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Cold Zero

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10 hours, 26 minutes

From #1 New York Times bestselling author Brad Thor and USA TODAY bestselling author Ward Larsen, comes a heart-pounding thriller of survival, espionage, and global brinkmanship, where the frozen Arctic becomes the deadliest battlefield on Earth.

A vanished plane. An earth-shattering secret. A countdown to World War III.

Hemisphere Airlines Flight 777—the most advanced jetliner ever built—disappears without a trace over the North Pole. Crippled by sabotage, it crash-lands on the ice, stranding the surviving passengers in a wasteland of frigid cold and chaos.

The real storm, however, is still coming.

Hidden inside the wreckage is the prototype for a revolutionary piece of technology that could upend the balance of world power. Now Washington, Moscow, and Beijing are racing to be the first on scene to retrieve it—at any cost.

Trapped in the middle of the world’s most dangerous flashpoint are CIA operative Kasey Sheridan and former fighter pilot turned first officer, Brett Sharpe. Hunted by enemy forces, they must spirit both the device and its creator across the ice to safety—before rival superpowers turn the Arctic into a war zone.

With the clock ticking and the temperature dropping, the fate of the free world is about to be decided at the top of the globe.

Audio CD

First published February 10, 2026

1248 people are currently reading
1714 people want to read

About the author

Brad Thor

50 books7,542 followers
BRAD THOR is the #1 New York Times bestselling author of twenty-six thrillers, including COLD ZERO, EDGE OF HONOR, SHADOW OF DOUBT, BLACK ICE (ThrillerFix Best Thriller of the Year), NEAR DARK (one of Suspense Magazine’s Best Books of the Year), BACKLASH (nominated for the Barry Award for Best Thriller of the Year), SPYMASTER (“One of the all-time best thriller novels” —The Washington Times), THE LAST PATRIOT (nominated Best Thriller of the Year by the International Thriller Writers Association), and BLOWBACK (one of the “Top 100 Killer Thrillers of All Time” —NPR).

COLD ZERO is on sale now. For more information, visit BradThor.com.

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Displaying 1 - 30 of 283 reviews
Profile Image for Scott.
662 reviews73 followers
April 4, 2026
Brad Thor’s “Scot Harvath” thriller series has been moving up on my reading list, and will be up after I finish reading William Kent Kreuger’s “Cork O’Conner” books.

However, I recently watched Brad Thor and Ward Larsen’s interview with Barbara Walters at the Arizona Poisoned Pen Bookstore on YouTube promoting their new co-authored novel – “Cold Zero” – which may not only be turned into a series, but has already been optioned and fast-tracked by Netflix for a movie. Their discussion with Barbara really piqued my interest and I felt it wouldn’t be cheating to read a one-off novel (at least for now) to get a taste of Thor’s storytelling without disrupting my overall reading schedule.

And the result was WOW! Sneaking this thrill-ride of a novel into my three-day work escape weekend turned out to be a dang good decision on my part. Yea, baby! It was awesome!

“Cold Zero” is a combination of Tom Clancy’s heart pounding classic “The Hunt for Red October” and T.J. Newman’s more recent “Worst Case Scenario”.

It is the story that starts with an undercover CIA mission involving the extraction of a high-ranking Chinese scientist, Dr. Chen Li, who has developed an AI tool that will change the balance of military power for whoever possesses it. The two agents, Kasey Sheldon and Walter Ho have got their man and boarded Hemisphere Airlines Flight 777 with him, heading home.

However, things wrong. Deadly wrong. Somewhere over the Arctic near the North Pole, the plane has disappeared without a trace due to an act of criminal sabotage that goes beyond any levels of acceptable behavior. As a result, the jetliner has crash landed on the frozen ice, stranding a small group of survivors including Chen and Kasey. Who find themselves in even more danger and fighting for their very survival.

At the same time, things turn into a global hunt for the AI tool. The Americans are racing to rescue them before the Chinese military teams arrive in full force to reclaim their prized device. Both sides have submarines, icebreaker boats, and military aircraft on the way with arrival times within minutes of one another. And that is only if the weather allows them too. In addition, a newly designed state of the art Russian submarine out on it’s test run, finds itself in the middle of the rival superpowers and an opportunity to create a massive win for itself.

Who will get there first? And more importantly, how will Chen and Kasey avoid getting captured, let alone survive? And since it is clear that the Chinese are proving themselves desperate enough to use any and all means of force to get their device back, will the Americans be forced to respond in like manner and risk starting a war? This is what a thriller is all about, including espionage, world political powers, and one thrilling physical challenge and conflict after the other.

A book like this should be read without many key plot points in order to keep suspenseful moments and well-delivered surprises real and fresh for those who choose to read it, so I will not share anymore. I’ve probably already shard too much, but most of this is covered in the inside book cover (and I left out the details to keep from giving the important stuff away).

As you can tell from earlier comments before sharing a high level description of the story, the good news is that “Cold Zero” is a very, very hard book to put down. I started it on a Friday night and finished it on Saturday night, turning it into a 24-hour read. It gave me lots of tension, chills, and moments of what the heck is going to happen and how are they going to get out this situation?

Thor and Larsen write in an extremely high tension, fast paced, confident, and methodical military style. At times I almost felt like I was getting hit in the head, literally. There are many things that drew and kept my attention, especially it’s intricately layered and detailed techno-thriller plotting. It reminded so much of the early Tom Clancy Jack Ryan novels in so many ways – structure, style, plotting, and even enough technobabble to help you think you are competent enough to understand the military and weapons jargon. I would add that the big what scenario that they used to drive the story was similar to the style and pace of the airline thrillers that T.J. Newman has written over the last five years, including “Falling”, “Drowning”, and “Worst Case Scenario”. Although those were less military focused, “Cold Zero” had that impossible rescue mission approach to plotting.

The two authors made this an incredibly easy book to immerse myself in. It only took a couple of chapters to get going and I was off to the races in an espionage-based spy thriller that was almost impossible to put down. It quickly evolved into a roller-coaster thrill-ride of original and creative proportions that read like a movie script, in which every scene was playing out visually in my head. It was easily one of, if not the most, intense books that I have read this year. Although you had to let go of what is realistic at times (yes, some things were a bit too farfetched), it was still unique and strong enough to possibly find itself in my top ten best reads of 2026. We’re only a little over three months into the year, but this one left a really good impression on me.

Overall, Thor and Larsen delivered a winning and creative formula, and even with it faults, a thoroughly engaging and entertaining read that will keep you up late turning the pages at breakneck speed demanding to see what happens next.


Profile Image for Grandma Susan.
483 reviews269 followers
February 20, 2026
Set in the Arctic the survivors must thrive until help arrives. Kasey Sheridan, CIA, and first officer Brett Sharpe also need to protect a device which can change the world and it’s creator from those who would steal it. Page turner from the beginning. Intense, fast paced and believable. I liked the main characters. Highly recommend if you enjoy spies and intrigue.

I was blessed with an ARC. Thank you NetGalley and Atria Books. The opinions expressed are my own and unbiased.
Profile Image for Tim.
2,551 reviews335 followers
February 18, 2026
It's lameville time for some of my usually reliable authors.
Profile Image for Abibliofob.
1,630 reviews106 followers
March 15, 2026
I have been a fan of Brad Thor and Ward Larsen for some time now and was intrigued when I heard they had a story they wrote together. Cold Zero has nothing to do with the books they have written before apart from being a thriller with some great action in it. Oh, and some great characters subjected to a wonderful plot. I don't know if it's just me but I laughed out loud at some of the situations in this book. They are truly epic. I had no idea where this story would go or end and it took some twists that I didn't see coming. It was as I suspected very well written and it got a hold on me from the first chapter all the way to the end. Now I wonder if they will write more stuff together and if it will have Scot Harvath, David Slaton or Jammer Davis in them? I hope this will happen.
Profile Image for Matt.
4,985 reviews13.1k followers
December 7, 2025
First and foremost, a large thank you to NetGalley, Brad Thor, Ward Larsen, Atria Books, and Emily Bestler Books for providing me with a copy of this publication, which allows me to provide you with an unbiased review.

Always eager to read the work of Brad Thor, I was pleased to see this collaborative effort with Ward Larsen. These two well-established authors recount a gripping story that has a little of everything for the reader.  When Hemisphere Airlines Flight 777 takes off from Hong Kong, everything seems in order. A long journey to New York ahead, passengers and crew alike are ready to enjoy the most advanced piece of airline equipment ever built. However, an emergency over the North Pole causes the flight to disappear from radars and plunges those on board into chaos. Sabotage brought the plane down and a crash landing onto the ice leaves only a handful alive with no means by which to communicate to the outside world. On the flight is a prototype that could change the world of warfare forever and it is sought after by many. The Chinese were sure they were getting it, the Americans had planned to take possession of it when a certain passenger on the flight hands it over, and the Russians come to learn of it after the crash. All three are vying to reach the wreckage first and take the technology for themselves. CIA operative Kasey Sheridan was tasked with bringing the tech and its inventor to the US, but things are spiraling out of control. She must work with Brett Sharpe, the flight’s first officer, to get out of harm's way and into American custody before anyone can get their hands on the prototype or the weather kills them all. It's a race like no other and there is no room for error. Brad Thor and Ward Larsen spin a captivating story that I could not stop reading!

I am quite intrigued about the collaborative work of Brad Thor and Ward Larsen. Having read all of Thor's novels and a few of Larsen's, I knew what awaited me. The storytelling was superb and kept me hooked from start to finish. The narrative developed well and kept me wondering what awaited me as things progressed. As the momentum built, I could see the authors depicting things in such a way that there was no getting out of the tension and trouble brewing. Short chapters kept the story clipping along and provided the reader no reprieve as things inched closer to disaster. The entire premise of the piece was so well presented that I was literally reading well into the night and wondering what could possibly go wrong next.

Characters are perfectly developed for this type of thriller, as their backstories connect with ongoing events. The thorough exploration of Kasey Sheridan's role was key to understanding everything that was taking place, as well as how things would soon take a turn. Use of characters from all three camps—Americans, Russians, and Chinese—helped add depth and tension to the story in ways that made it even better. While I expect this is a one-off, the connection I had to many on the pages of the book proved to make it something in which I was invested, which added to my enjoyment. Thor and Larsen have done well with characters in the past and this collaboration was no exception.

Surprises work well in thrillers and the authors made sure to pepper them throughout. There were so many moments that I was not expecting something, only to have it occur and develop before my eyes. The political and social twists made this story all the more enjoyable for me, keeping me guessing and hoping that things would not get too off the rails. I found myself gripped and unable to put the book down, which is a sign that this was just what I needed as I push through many books of late. I would strongly encourage more collaborations between Brad Thor and Ward Larsen, as this one worked so well!

Kudos, Messrs. Thor and Larsen, for one of the best thrillers I have read in a long while!

Love/hate the review? An ever-growing collection of others appears at: http://pecheyponderings.wordpress.com/
Profile Image for Daniel Ray.
662 reviews15 followers
March 17, 2026
Military rescue of a downed plane with special cargo and personnel at the North Pole. No help from Santa! 🎅
Profile Image for Todd.
2,291 reviews8 followers
March 24, 2026
l was very much looking forward to reading this collaboration. Thor has been one of my favorite authors, and I've recently caught up with Larsen's work.

The majority of the book is set on the polar ice cap, where a plane carrying pair of CIA agents are smuggling a Chinese scientist was forced to crash by the Chinese.

A thrilling story of survival and the hope of evading the Chinese forces sent to retrieve them.
Profile Image for Kristine.
3,551 reviews53 followers
November 10, 2025
4.25 Stars ⭐️

I am a HUGE fan of Ward Larsen and an even bigger fan of Brad Thor. I was thrilled to be given this ARC, especially when I realized that this was their first collaboration together. Mr. Larsen has successfully used his real-life aviation experience to bring his David Slanton series to life and of course, Mr. Thor has created a favorite character of mine in Scot Harvath.

This new storyline centers on the attempted defection of the Chinese developer of the newest, greatest technological advancement in the Artificial Intelligence war. This Chinese scientist was in the middle of escaping with this new device to the United States, with the help of his CIA handlers, when the powers that be in Beijing realized what was happening. They just so happened to be on a commercial flight from Macau to New York when the defection was discovered and the decision was made to do "whatever it took" to stop them and to recover the device. Even if it meant bringing down the plane.....

And so begins an intense race by the worlds superpowers to find and recover what just may be the key to winning the next war. Nothing is off limits - sabotage, false trails, nuclear class submarines, tip of the spear operators - as major countries go to great lengths to try to hide the limits to which they are willing to go.

All of this time, the people stranded in the Arctic with the device are facing truly life-threatening circumstances, just trying to survive.

This is definitely a pulse pounding thriller with nonstop action. What I enjoyed the most though was the female main character - CIA Officer Kasey Sheridan. She emerged as a strong, intelligent character who continually has to think on her feet in what felt like never ending dangerous circumstances. I also enjoyed the 1st Officer Brett Sharpe who stepped up unexpectedly and ended up becoming immensely important to their survival. To me, the development of these two characters added to the strength of this novel.

Thank you to NetGalley and Atria Books | Atria/Emily Bestler Books for the opportunity to read and review this ARC. This book will be out for publication on February 10, 2026.
Profile Image for Jeff.
859 reviews29 followers
November 25, 2025
A plane carrying a defecting Chinese scientist and his CIA handlers disappear over the North Pole. Soon after, a Chinese ice-breaker and a Russian sub head for the wreckage site, not for survivors, but for the precious cargo that was also onboard. Cold Zero is a new series from these established authors, featuring CIA operative Kasey Sheridan and fighter pilot Brett Sharpe, and if this book is any indication how the rest of this series is planned, it will be a sure-fire hit. Non-stop suspense and movement keep the reader fully engaged as Kasey and Sharpe fight not just two world superpowers, but the harsh Arctic weather as they protect the defector and the secret weapon that came with him. There is absolutely no downtime in this thriller, just wall to wall action and some intense battle scenes. You couldn’t do any better for a first book in a series, and I can’t wait to read more. No-doubt-about-it five stars!
I received an ARC of this book from the publisher through NetGalley in exchange for an honest review.
Profile Image for Dayle (the literary llama).
1,595 reviews188 followers
March 4, 2026
Audiobook Notes: A great audiobook experience. Easy to jump in and binge.

📖: A unique and entertaining thriller that’s very in line with Thor and Larsen’s oeuvre. Together they have created a meticulous and suspenseful icy adventure. Traversing continents and multiple agencies, everyone wants a piece of tech stranded in the Arctic. Who will get there first? And how will those still alive survive the storms… of both the environmental and human variety. It’s definitely a technical thrill ride.

My one big complaint, though, is that there are so many people and points of view, that the emotional connection gets lost. I don’t think we spend enough solid time with one group to have any depth to anyone. While I was curious how it would play out, I found I didn’t really care who lived or died through it all. I wasn’t attached to any of the people.

Still, I was definitely entertained. And I really hope this becomes a series because I’m craving backstory and depth to the main characters. I want to return to them and get more.

* I received a free audiobook from the publisher
Profile Image for Steven Netter.
477 reviews41 followers
September 27, 2025
READ MY FULL REVIEW AT Best Thriller Books

Take your anxiety medication before cracking open Cold Zero because Brad Thor and Ward Larsen have teamed up to create an icy and intense espionage and military thriller that will chill you to the bone.

If you’ve ever wondered how World War III could start, look no further than Cold Zero. A thriller that highlights how far world superpowers will go to gain a technological and military edge. Set in one of the most inhospitable locations on Earth, Thor and Larsen take readers on a frigid and desperate journey to survive the elements and enemy factions to deliver game changing tech to the US and simultaneously deliver a decisive blow to their foes

It’s exciting, entertaining, heart-pounding, cold-blooded stuff from two of the best thriller writers in the business.
Author 16 books47 followers
February 27, 2026
This was typical Brad Thor, fast-moving, not very complex plot, lots of violence. The characters are good, especially the protagonist, Kasey. The ending was a bit anti-climactic, the villain frankly… meh.
Profile Image for Erik.
143 reviews
March 16, 2026
I think a co-author collaboration is tough to pull off, but Brad Thor (one of my favorites) and Ward Larsen managed to do it very effectively in this thriller. I flew through it.
Profile Image for Adah Udechukwu.
708 reviews93 followers
February 24, 2026
Action, action, total action.

Chapter one started with a bang. The type that ensures you read the novel till the end asap.

It's been a while since i read a fast paced action-packed novel and i enjoyed every page of Cold Zero
Profile Image for M.
1,598 reviews8 followers
March 6, 2026
COLD that is for sure‼️ These two authors-Thor and Larson-have created an awesome thriller at the “top” of the world-North Pole. Chinese dissident, CIA, airplane over the North Pole, survivors, submarines, Navy Seals, Russian “Aurora”, weather elements, Sky Fire and a good couple of twists and turns. Enjoy
Profile Image for John.
208 reviews6 followers
December 11, 2025
Really good debut book for the duo of Ward Larsen and Brad Thor. It is an intense espionage thriller, with suspense and action. Great cast of characters and I liked how the authors told the story through the Chinese, American, and the Russian point of view. Crazy battle towards the end and then the cliffhanger ending?? It was a really good story and I hope to see a series out of it.
Thank you NetGalley and Altria Books for the ARC and the book will be out Feb. 10, 2026.
Profile Image for Jkane.
756 reviews3 followers
March 5, 2026
This was a decent spy novel, but 90% of it takes place on a frozen tundra, and so it wasn't all that exciting. Also, I had much higher hopes for a Brad Thor and Ward Larsen novel. The protagonist is a female CIA analyst, which was not what I expected. However, reading the synopsis of the novel again, I probably should've concluded that she'd be the main character. The book was ok, but certainly not great.
Profile Image for Mark.
2,547 reviews31 followers
March 13, 2026
Brad Thor’s Cold Zero carries the same icy tension and high‑stakes survival energy that made Dale Brown’s Arctic Storm Rising such a fun read. Similarly, the Arctic becomes the setting, but this time the threat isn’t Russian forces. Instead, a Chinese security team is hunting the survivors of a downed aircraft, determined to reclaim a world‑altering device and its creator, both who’ve been smuggled out of China...Among the crash survivors are CIA officer Kasey Sheridan and co‑pilot Brett Sharpe, who must not only endure brutal conditions but also protect Sheridan's asset until rescue arrives. Thor keeps the tension high from the opening pages, delivering a fast‑paced, believable thriller that never loses momentum...I loved the characters, the relentless pacing, and the sense of authenticity through every chapter. A fun page‑turner from start to finish.
Profile Image for Lisa Henderson-Farr.
433 reviews9 followers
March 15, 2026
Thank You to NetGalley and Atria books for an advance digital copy of this book in exchange for an honest review.

This is an adrenaline fueled story that will have you gasping for air in anticipation of future events.

A plane crash in the Artic has three countries in a race to be the first ones there. Sensitive information aboard this downed aircraft must be retrieved and depending on which country gets there first, dictates how it will be used.
This will have your at the edge of your seat, glued to each and every page.
Profile Image for Frosty61 .
1,071 reviews21 followers
March 14, 2026
4.5 * rounded up
Just what I was looking for - lots of action, unique setting, and a strong female protagonist. There are some drawn out passages about technology and political posturing, but overall the pace was pretty good and it held my interest. There's even a polar bear who helps our good guys a little.

Profile Image for Jamie.
168 reviews10 followers
February 8, 2026
Well written, fast paced and enthralling. If I had to choose one word to describe this book it would be…solid.
47 reviews
February 15, 2026
Overall enjoyment: 1/1
Readability: 1/1
Immersion: 0.5/1
Characters: 0.5/1
Originality: 1/1
Profile Image for Pamela.
555 reviews
March 1, 2026
Good collaborative effort between these two authors. Fast pace, exciting action. Perhaps a bit far fetched, but given the direction of AI, not unfathomable. Enjoyed it very much.
7 reviews
February 9, 2026
Really enjoyed this book. Gripping and fast-paced with short chapters. Hard to put down. Thanks to the Savannah Book Festival, I was able to obtain an advanced copy. Highly recommend.
Profile Image for Julie .
709 reviews16 followers
November 17, 2025
And Thor grabs the gold ring once again.
Absolutely riveting story of CIA operative Kasey Sheridan and her fight to bring back to the US
the brilliant Chinese physicist, Chen Li, who is defecting with his AI invention that could change the entire landscape of international espionage and warfare. When the plane they are on crashes in the Arctic wilderness, far from any signs of civilization, she knows that rescue is coming, but is it coming from friend or foe?
Working with the lone surviving crew member and former combat pilot, Sharpe, she must come up with a rescue option that will make sure Chen and his invention do not fall into the wrong hands, while battling the frigid temperatures and ferocious Arctic wild life.
Fabulous read with everything: terror, espionage, mystery, mayhem and absolutely intriguing characters.
Thor is a mastermind at writing the quintessential thriller.
Another story I hated to see end.
Bravo.
72 reviews8 followers
December 1, 2025
Like everyone else, I was excited when I heard about this collaboration between Brad Thor and Ward Larsen. And even better, I was given an early copy by NetGalley to review.
The novel opens with a great cat-and-mouse chase through Hong Kong. Action right off the bat. And it does not let up throughout the entire book. Constant scenes of action, suspense and surprise.
You can tell both authors brought all of their expertise to this book. Amazing descriptions of aircraft and all the intricacies, giving us a better and deeper knowledge to highlight the travails of those in the novel as well as heart-stopping action and great characters.
This is one of those novels that you wait and hope is coming and when you are reading, you don't want to end. As I flew through the pages, nearing the end, I kinda wanted the page count to be wrong and one more thing to happen to prolong my reading experience. Can not say enough good things about this novel.
The fact that I was sitting warm in my house while a winter cold front moved in and temperatures dropped down near -40, but I appreciated the description of the cold storm and the aches the characters felt while dealing with their own cold winter storm. I'm sure I was just shivering in support.
If there are to be any more novels written by Thor and Larsen, Sign me up. I'll be first in line.
2 reviews
March 22, 2026
Cold Zero is an ambitious tale with a mind-boggling storyline. It's a fast-paced thriller of political brinkmanship, paired with an impressive high-definition clarity of the power of Artificial Intelligence in modern warfare.

The novel is intriguing, bold, and contemporary in its writing. It provides readers with a major shift that the future of Artificial Intelligence would bring—the weaponisation of AI.

BLURB

Dr Chen Li, a leading Chinese scientist, has created a prototype technological marvel that will give the People's Republic of China a global military edge. This invention is set to revolutionise the Chinese military capacity, leapfrog the Western world military, and strip the American military of its global dominance

The creation of Sky fire, an Artificial Intelligence-powered weapon that is capable of taking control of software and the hardware of any military materiel, not only showed “remarkable success” but also showed its offensive potential. Dr Li, realising that the Chinese government wants to expand his invention globally to target the “digital infrastructure… and military systems” of the Western world, became nervous because his purpose in creating Sky Fire was to make it a stabilising force and not to be weaponised.

However, Dr Chen Li defected to the United States of America through the preemptive move by the CIA with the help of CIA operative, Kasey Sheridan

When the Chinese Ministry of State Security, headed by Zhang Tao knew of Dr Li's defection, they set out to arrest him and take possession of his creation. However, Dr Li beat them. The MSS fell hook, line and sinker by using Sky Fire to take control of a car on the streets of Hong Kong to escape.


Now, Kasey and Dr Chen Li are airborne to the United States on Hemisphere Airlines Flight 777. On the blindside, China made a countermove by shutting the turbo engine of the plane, belly landing it in the Arctic, on a snow floe.


The US's Cheyenne, China's Snow Dragon 2 and Russia’s Aurora are in a headlong race to access the Skyfire at a flashpoint in the Arctic, which brings us to the caption Cold Zero


ANALYSIS

KASEY SHERIDAN

Kasey was the most prominent character in the novel. She represented brilliance in the standard of the CIA's work. She was bold, purpose-driven and sympathetic.

She paid Assiduous attention to details because her work was of life and death. Besides, she was leading a flagship operation of the CIA to retrieve the world's most advanced technology.

She mirrored the key role women play in today's politics. Brad Thor gave a unique voice to women in his novel. Kasey reminds us that women have moved from the traditional stereotyping of weaker vessels to courageous and emboldened members of society who are capable of directing the course of key social policies

Kasey's leadership, direction and expertise challenged the norms and what society has accepted about women. With the right direction and coaching, she stood not as a mere CIA operative, but as a woman whose ideas and expertise mattered.


DR CHEN LI

He represents the various scientists at the forefront of advancing Artificial intelligence. He was a deliberate and conscious-driven scientist.

Though some readers will argue that Dr Li's act was treasonous to his nation, I’d argue that he did one of the most selfless acts in the story though he experienced significant emotional conflicts. His action was a matter of morality rather than patriotism

He defected because, the Chinese government wanted to weaponise his invention which was contrary to the purpose Sky Fire was created.


His bold decision signals that scientists are at the helm of scientific research and development must remain true to their duty to make the world a safer place to live. The purpose of their inventions is to elevate humanity rather than to reduce it to nothingness.

SKY FIRE

Sky Fire, the prototype revolutionary technology sat at the centre of the story. It presented the ethics of Artificial Intelligence. The use of Artificial Intelligence will determine whether it's a Pandora’s box for humanity or not.

Sky Fire was created as a stabilising force. In other words, to maintain a fixed state of global peace. With the Potential of Sky Fire, no war could emerge on the score of its ability to control both software and hardware of military systems. Leveraging its power, any burgeoning war could be easily nipped in the bud, preventing a Third World War. But it was secretly targeted to be weaponised.

Sky Fire is not far from reality. So, the militarisation of AI is not news. There should be an enforced ethical code that will govern the use of AI as a military weapon.



CONCLUSION

Cold Zero is a brilliant and powerful techno-thriller. It excels in its timely exploration of the militarisation of AI. The scenes are engaging as they are well-written. It is almost a literary genius and could be cinematically perfect.

My only concern is why it wasn't titled Sky Fire to highlight the theme of Artificial Intelligence.
86 reviews1 follower
April 2, 2026
Cold Zero operates at the intersection of modern fear and speculative escalation: AI-driven cyber dominance as the decisive weapon of great power competition. The premise is straightforward but potent—a Chinese AI expert develops a device capable of infiltrating and controlling virtually any networked system, and defects to the United States. What follows is a high-stakes race between superpowers, triggered by a catastrophic mid-air sabotage that strands key players in the Arctic.

The threat is both compelling and uneven. On one hand, the idea of AI-enabled, satellite-linked intrusion into critical systems reflects real anxieties in today’s digitized battlespace. On the other, the device itself feels almost too powerful—bordering on science fiction rather than near-term plausibility. Yet, the authors succeed in conveying the broader truth: technology, particularly AI, is now a central theater of geopolitical warfare.

CIA officer Kasey Sheridan anchors the story as the primary protagonist. She is hyper-competent—an elite operator, linguist, tactician, and medical asset rolled into one. While this strains realism, it fits the genre’s tradition of exceptional protagonists. The surrounding cast reinforces familiar archetypes: Americans as decisive and principled, Russians as cold and calculating, and Chinese officials as hierarchical and power-driven. These portrayals may lean toward caricature, but they serve the narrative’s momentum and clarity.

Thematically, the novel highlights a stark reality: power operates on Machiavellian terms. Institutions and leaders act to preserve influence, often indifferent to collateral damage. At the same time, the story subtly contrasts institutional priorities with individual ethics. In moments of crisis—particularly in the unforgiving Arctic environment—what matters most is not policy, but personal decision-making under pressure.

The Arctic setting is one of the book’s strongest elements. The cold, isolation, and survival conditions strip away abstraction and force characters into raw, consequential choices. It becomes a proving ground—not just of endurance, but of trust. Cooperation versus self-preservation emerges as a quiet but consistent undercurrent.

Institutionally, the book presents a familiar but effective view: organizations are driven by mission and turf. When those priorities conflict, self-preservation at the leadership level often takes precedence. Meanwhile, those on the ground are expected to risk everything. This dynamic feels authentic and resonates with real-world perceptions of bureaucratic power structures.

Technically, the weapons, tactics, and operational flow are largely believable, even when the central device stretches credibility. The pacing is sharp—short chapters, focused dialogue, and clear narrative progression make it highly readable. Occasional over-description of settings slows momentum slightly, but not enough to detract from the overall experience.

Unlike some thrillers, Cold Zero does not push a deep philosophical or spiritual framework. Its moral layer is more personal than systemic: character is revealed through action, not ideology. The book refrains from overt judgment on political systems, instead emphasizing how individuals navigate them.

Final Verdict:
Cold Zero is a highly engaging, fast-paced espionage thriller that reflects contemporary anxieties about AI and cyber warfare without becoming overly didactic. While its central technology leans toward the speculative, the geopolitical tension and human dynamics keep it grounded.

Recommended for fans of espionage, military fiction, and technology-driven thrillers. It sets a strong standard for the genre.
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Review of advance copy received from Author
February 6, 2026


Long before Riggs & Murtaugh redefined the buddy movie in the late 80s, Paul Newman and Robert Redford worked through mismatched character traits and attitudes to dazzle audiences with everything from bank robberies, fighting the Bolivian army, Great Depression era grifters and 'the big Con'. Despite critical and huge commercial success of their two silver screen outings with the same director, the duo looked far and wide though never managed a third collaboration. The BUTCH CASSIDY AND THE SUNDANCE KID of the Action Spy Thriller Universe, Brad Thor and Ward Larsen, are rolling heavy into 2026 with COLD ZERO, classic techno-espionage fiction that puts cutting edge global threats and advanced military applications into the hot seat before they're on the public's radar. Blending action, political intrigue, clandestine operations, and espionage, COLD ZERO is vintage plot-driven adventure that's all verve, adrenaline and elbows. It's sang froid, it's Clancy-esque. It's COLD ZERO.

Starting out like a Bruckheimer/Simpson movie, COLD ZERO is a slam-cut manifesto, zooming along from an intelligence coup of a lifetime that could cripple China's military for many years to come to plane crash in a place where the wind blows cold and the ice burns colder. Almost homage to bad jokes of yore, a CIA officer, a Chinese scientist defector and a secret tech marvel leveraging transformative AI for military use make a run for it from Macau, only to converge in the icy wilderness near the North Pole. The Cold War is on again, burning bright and COLD ZERO means that this time, it's really cold. The ChiComs and the Russians have their eye on the Arctic; a geopolitical battleground where war is fought with bully diplomacy, territorial overreach, and military intimidation. A place where the guardrails of politics, dialogue and statesmanship are nonexistent. Arctic trade routes are up for grabs and seemingly, the USA is at the back of the bread line. A gallery of destruction, COLD ZERO showcases the US military machine moving mountains for a rescue mission in the most inhospitable place on earth, feasible and operationally sound on paper. Though when the skids hit the ice and the extreme cold, it's a totally different ballgame.

Truly ENCOUNTERS AT THE END OF THE WORLD, COLD ZERO lets the 'Doomed Penguin' march, elements of LOST, SNEAKERS, WHITEOUT and GOLDENEYE in it's snowy footprints. As that, COLD ZERO is a novel as rejuvenating as glacial wind. There are no overbearing modern military Ubermensch RangerDeltaSEAL superhero types, a thriller exquisitely grounded in reality with deftly crafted everyday American service and intel members doing their damn best to counter the Commie horde. It reads like 1980s Clancy gold but it's more Thor than ever before and classic Larsen--a real treat for fans and lovers of good techno thrillers. It goes from COLD ZERO to hero in no time. It's a novel so good, it'll make ordering room temperature water at restaurants a cinch forever. Combining the talents of two bestselling authors with deep storytelling chops, COLD ZERO might become the de-facto way to wow adrenaline junkie readers. Keeping reader on the edge of arctic frozen wrath, COLD ZERO is a novel that hits with cataclysmic force. Come in out of the cold and try for COLD ZERO. It'll keep you frosty.







































Many thanks to Ward Larsen, Brad Thor, Atria/Emily Bestler for the contest and ARC copy. <3
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