Love The Gray Man? Readers share 64 books like The Gray Man...

By Mark Greaney ,

Here are 64 books that The Gray Man fans have personally recommended if you like The Gray Man. Shepherd is a community of 12,000+ authors and super readers sharing their favorite books with the world.

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Book cover of Killing Floor

Patrick Weill Author Of The Mazatlan Showdown

From my list on action thrillers to keep you awake past bedtime.

Why am I passionate about this?

I remember carrying home tall stacks of library books in the summertime and spending entire days immersed in my heroes’ latest adventures as a kid. This continued as I grew up, as I learned that I ought to be a hero, too, by confronting evil both within and without. So I took steps to face my fears, and now when I write about good guys fighting bad guys in my own action fiction, it’s with a real passion for doing what’s right, for making this world better, even if it’s in my own way and only just a little. 

Patrick's book list on action thrillers to keep you awake past bedtime

Patrick Weill Why Patrick loves this book

As I indicated earlier, I am a Lee Child superfan. I’ve read all his original books. A thick (and expensive) biography. A long essay he wrote on heroism. All his short stories. You get the idea. So it was fun to re-read this book, his first.

It wasn’t what I remembered, that’s for sure! Yes, the action scenes are vivid and instructive (Child writes about the utility of a headbutt versus the risk of breaking your hand with a punch), and the action is what I remember most. But there’s more to this book than fights: there’s a major romance, which the author writes with gusto and in detail, heavy on feelings, not on private parts; the prose is better than solid, with imagery that really makes it come alive; and the story is plausible and tightly woven, with plenty of surprises. 

By Lee Child ,

Why should I read it?

16 authors picked Killing Floor as one of their favorite books, and they share why you should read it.

What is this book about?

Ex-military policeman Jack Reacher is a drifter. He's just passing through Margrave, Georgia, and in less than an hour, he's arrested for murder. Not much of a welcome. All Reacher knows is that he didn't kill anybody. At least not here. Not lately. But he doesn't stand a chance of convincing anyone. Not in Margrave, Georgia. Not a chance in hell.


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Book cover of The Ascent

The Ascent by Adam Plantinga,

When a high security prison fails, a down-on-his luck cop and the governor’s daughter must team up if they’re going to escape in this "jaw-dropping, authentic, and absolutely gripping" (Harlan Coben, #1 New York Times bestselling author) USA Today bestselling thriller from Adam Plantinga.

Book cover of The Black Echo

Jeff Kerr Author Of Blunt Force Trauma

From my list on crime fiction that sucked me into a series.

Why am I passionate about this?

When I was a boy, my father filled our house with books. From an early age, I immersed myself in whatever he was reading, especially spy thrillers (John LeCarre was his favorite) and crime fiction (the first I recall reading was Joseph Wambaugh’s The Onion Field). I loved those books. What captivated me most were stories that provided clues but made me piece them together to draw my own conclusions. I strive to deliver this same experience to the readers of my novels by providing entertaining tales with unexpected, yet plausible endings.

Jeff's book list on crime fiction that sucked me into a series

Jeff Kerr Why Jeff loves this book

This book introduced me to the gritty world of Los Angeles police detective Harry Bosch. I love Bosch’s smarts and toughness, yet beneath his hard exterior lurks a sensitive heart. He is fond of saying, “Everybody counts, or nobody counts,” and he means it.

Whether the victim is a rich businessman or an impoverished drug addict, Bosch pursues justice with the tenacity of a bulldog. Not only that, he makes tough choices with an ironclad sense of right and wrong. After reading it, I devoured everything Michael Connelly has written. I’m that fan who pre-orders his next book as soon as the announcement hits my inbox.

By Michael Connelly ,

Why should I read it?

15 authors picked The Black Echo as one of their favorite books, and they share why you should read it.

What is this book about?

An LAPD homicide detective must choose between justice and vengeance as he teams up with the FBI in this "thrilling" novel filled with mystery and adventure (New York Times Book Review).

For maverick LAPD homicide detective Harry Bosch, the body in the drainpipe at Mulholland Dam is more than another anonymous statistic. This one is personal . . . because the murdered man was a fellow Vietnam "tunnel rat" who had fought side by side with him in a hellish underground war. Now Bosch is about to relive the horror of Nam. From a dangerous maze of blind alleys…


Book cover of The Puzzle Palace: A Report On NSA, America's Most Secret Agency

Patrick D. Anderson Author Of Cypherpunk Ethics: Radical Ethics for the Digital Age

From my list on history surveillance techniques in the USA.

Why am I passionate about this?

I have always been suspicious of government and corporate power, but it was only when my officemate in graduate school started teaching me about digital technologies that I really focused on the power relations involved in institutionalized surveillance. Eventually, I discovered the cypherpunk movement, which opposes surveillance. I wanted to know what they knew, so I started to read everything I could about surveillance. I found that few journalists and almost no academics attended to the powerful message of the cypherpunks, so I decided that I would write the first academic book about the movement, hoping that I could do my part to raise awareness about this crucial issue. 

Patrick's book list on history surveillance techniques in the USA

Patrick D. Anderson Why Patrick loves this book

I read Bamford’s work because I wanted to understand the history of the NSA, and I was not disappointed. I loved learning, in excruciating detail, about the surveillance techniques and programs of the NSA before the internet. 

This book shattered my impression that the NSA was a responsible agency that turned “bad” during the War on Terror. Bamford showed me that modern-day NSA mass surveillance, as revealed by Edward Snowden, actually represents the normal workings of the NSA rather than merely being an aberration. The most important lesson, though, was that the NSA has worked so hard to suppress the public use of encryption, the most important anti-surveillance technology we have.  

By James Bamford ,

Why should I read it?

3 authors picked The Puzzle Palace as one of their favorite books, and they share why you should read it.

What is this book about?

In this remarkable tour de force of investigative reporting, James Bamford exposes the inner workings of America's largest, most secretive, and arguably most intrusive intelligence agency. The NSA has long eluded public scrutiny, but The Puzzle Palace penetrates its vast network of power and unmasks the people who control it, often with shocking disregard for the law. With detailed information on the NSA's secret role in the Korean Airlines disaster, Iran-Contra, the first Gulf War, and other major world events of the 80s and 90s, this is a brilliant account of the use and abuse of technological espionage.


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Book cover of The Mazatlan Showdown

The Mazatlan Showdown by Patrick Weill,

Jeff Walker is a champion surfer haunted by the mystery of his father’s murder and his mother’s broken heart. After finding a job as a lifeguard, a rescue mission at sea plunges him into a far-reaching criminal conspiracy.

Walker and his closest friends aid the police in their investigation, through…

Book cover of Agents of Innocence

Keith Thomson Author Of Once a Spy

From my list on spy books that will make you paranoid.

Why am I passionate about this?

I played semi-professional baseball in France in 1986. If your baseball career has brought you to France, you should be rethinking your professional aspirations. No problem, I thought. I will write. I like to write. To my dismay, publishers were not fans of novels about French baseball players. The world of espionage I became acquainted with in Europe, however….

Keith's book list on spy books that will make you paranoid

Keith Thomson Why Keith loves this book

Washington Post national security reporter Ignatius may not know the world of espionage better than anyone, but he writes about it better than anyone. Agents of Innocence is such a realistic and engaging depiction of the life of a CIA case officer that a copy of it is left in the room of each new arrival at Camp Peary, the CIA training facility. It’s about an idealistic young CIA officer posted to Beirut to penetrate the PLO, and, in the process, learns hard lessons, not least of which is that once human lives are at stake, idealism takes a back seat to pragmatism. Ultimately, it is a compelling story with terrific characters, and I would have rooted for them had they been accountants or fishmongers rather than spies

By David Ignatius ,

Why should I read it?

1 author picked Agents of Innocence as one of their favorite books, and they share why you should read it.

What is this book about?

Agents of Innocence is the book that established David Ignatius's reputation as a master of the novel of contemporary espionage. Into the treacherous world of shifting alliances and arcane subterfuge comes idealistic CIA man Tom Rogers. Posted in Beirut to penetrate the PLO and recruit a high-level operative, he soon learns the heavy price of innocence in a time and place that has no use for it.


Book cover of The Quantum Spy: A Thriller

Keith Thomson Author Of Once a Spy

From my list on spy books that will make you paranoid.

Why am I passionate about this?

I played semi-professional baseball in France in 1986. If your baseball career has brought you to France, you should be rethinking your professional aspirations. No problem, I thought. I will write. I like to write. To my dismay, publishers were not fans of novels about French baseball players. The world of espionage I became acquainted with in Europe, however….

Keith's book list on spy books that will make you paranoid

Keith Thomson Why Keith loves this book

Ignatius’s most recent novel is in many respects a mashup of books no. 1 and 2 on this list: terrific storytelling and the latest spy recent tech: You’ll conclude that it’s just a matter of time until “bad actors” (spy speak for “bad guys”) can hack your brain. At the same time, you’ll enjoy the story.

By David Ignatius ,

Why should I read it?

1 author picked The Quantum Spy as one of their favorite books, and they share why you should read it.

What is this book about?

A hyper-fast quantum computer is the digital equivalent of a nuclear bomb; whoever possesses one will be able to shred any encryption and break any code in existence. The question is: who will build one first, the U.S. or China?

In this gripping thriller, U.S. quantum research labs are compromised by a suspected Chinese informant, inciting a mole hunt of history-altering proportions. CIA officer Harris Chang leads the charge, pursuing his target from Singapore to Mexico and beyond. Do the leaks expose real secrets, or are they false trails meant to deceive the Chinese? The answer forces Chang to question…


Book cover of CIA Improvised Sabotage Devices

Keith Thomson Author Of Once a Spy

From my list on spy books that will make you paranoid.

Why am I passionate about this?

I played semi-professional baseball in France in 1986. If your baseball career has brought you to France, you should be rethinking your professional aspirations. No problem, I thought. I will write. I like to write. To my dismay, publishers were not fans of novels about French baseball players. The world of espionage I became acquainted with in Europe, however….

Keith's book list on spy books that will make you paranoid

Keith Thomson Why Keith loves this book

Exploding wine bottles, guns constructed out of pipes, bullets made of teeth, aspirin explosives: If these sound like props from a B spy movie, it's because, again, truth > fiction. In the early-1970s, the Central Intelligence Agency spent a great deal of effort developing myriad weapons for sabotage. The results were this seventy-two-page illustrated manual, published in 1977 and distributed to American operatives likely to find themselves in situations requiring such improvisation. The manual is also invaluable for writers.

By USA Government ,

Why should I read it?

1 author picked CIA Improvised Sabotage Devices as one of their favorite books, and they share why you should read it.

What is this book about?

, Brand New Desert Publications Clean and Tight OS O


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Book cover of Aggressor

Aggressor by FX Holden,

It is April 1st, 2038. Day 60 of China's blockade of the rebel island of Taiwan. The US government has agreed to provide Taiwan with a weapons system so advanced, it can disrupt the balance of power in the region. But what pilot would be crazy enough to run the…

Book cover of The Bourne Identity

Patrick Weill Author Of The Mazatlan Showdown

From my list on action thrillers to keep you awake past bedtime.

Why am I passionate about this?

I remember carrying home tall stacks of library books in the summertime and spending entire days immersed in my heroes’ latest adventures as a kid. This continued as I grew up, as I learned that I ought to be a hero, too, by confronting evil both within and without. So I took steps to face my fears, and now when I write about good guys fighting bad guys in my own action fiction, it’s with a real passion for doing what’s right, for making this world better, even if it’s in my own way and only just a little. 

Patrick's book list on action thrillers to keep you awake past bedtime

Patrick Weill Why Patrick loves this book

This is the spy thriller that started it all! I was a huge fan of the Matt Damon trilogy and had always been an avid reader, so naturally, I gravitated toward the original novel, which was far better than the film.

Popular action thrillers tend to suffer from one of two diseases: “soldier syndrome,”—meaning the author knows what he or she is writing about but isn’t a master of the language—or from “poser-itis,” which is when the writer is good with a pen but would be too scared to use it to gauge out an eye if he or she had to.

So it’s a rare wordsmith who can understand the deepest, most primal parts of the human psyche and then put it into a literary form that delights the eyes and ears. Ludlum is one such writer.

By Robert Ludlum ,

Why should I read it?

15 authors picked The Bourne Identity as one of their favorite books, and they share why you should read it.

What is this book about?

Jason Bourne is back in the forthcoming major motion picture starring Matt Damon and Alicia Vikander. Go back to where it all began for Bourne in his first adventure - The Bourne Identity

He was dragged from the sea, his body riddled with bullets. There are a few clues: a frame of microfilm surgically implanted beneath the skin of his hip; evidence that plastic surgery has altered his face; strange things he says in his delirium, which could be code words. And a number on the film negative that leads to a bank account in Zurich, four million dollars, and…


Book cover of The Terminal List

Carl Michaelsen Author Of The Last of a Dying Breed

From my list on to bring on an airplane/vacation.

Why am I passionate about this?

If you’re at all like me, then finding time to sit down and read a book is incredibly challenging given how busy our everyday lives are. It seems like the only time I truly can dive into a book is on vacation. And so, all of the books I recommended I have either read on vacation or on an airplane. In my opinion, a good vacation book needs to be two things. It needs to be a quick read and it needs to be impossible to put down. When I sit down to write a book, I try to keep both of these in mind!

Carl's book list on to bring on an airplane/vacation

Carl Michaelsen Why Carl loves this book

The ultimate thrill ride from start to finish, Jack Carr’s first novel following Navy Seal Commander James Reece is one to remember. I bought this book at the airport in Anaheim, California, and started reading while waiting for my flight. A few delays and a five-hour flight later I had finished the entire book. It is a fantastically written book, laced with complex characters, government, and corporate conspiracies, and reminds us all why you must always be wary of those closest to us.

By Jack Carr ,

Why should I read it?

7 authors picked The Terminal List as one of their favorite books, and they share why you should read it.

What is this book about?

**SOON TO BE A TV SERIES STARRING CHRIS PRATT**

'With a particular line in authentic tradecraft, this fabulously unrelenting thrill-ride was a struggle to put down' Mark Dawson, bestselling author of The Cleaner

James Reece has nothing to live for and everything to kill for in the debut thriller from former Navy SEAL Jack Carr, perfect for fans of Lee Child and David Baldacci.

On deployment in Afghanistan, Lieutenant Commander James Reece's entire team is killed in a catastrophic ambush. But the deaths don't stop there, and Reece soon discovers that this was not an act of war by a…


Book cover of Act of Treason

Seth Sjostrom Author Of Patriot X

From my list on thrillers that kick terrorist butt.

Why am I passionate about this?

I have a fierce passion for justice. Studying political science in college, I keyed on moments in history where greed, power, and oppression marred human society. As a thriller writer myself (15 published titles and counting), I enjoy authors that understand the characters, settings, and combat sequences in their novels either through personal experience, training, or deep research. I work hard to ensure as wild as my characters’ adventures are, every detail is plausible. The books on this list are filled with raucous action and death-defying scenes while remaining possible. 

Seth's book list on thrillers that kick terrorist butt

Seth Sjostrom Why Seth loves this book

When asked about my favorite author and influences, Vince Flynn is right at the top. 

Flynn and his character Mitch Rapp aren’t afraid to take on anyone in order to wreak justice, even if the trail leads them to the oval office itself. This is what I love about the book, series, and character, that urgent, calculated versus reckless pursuit of justice.

Act of Treason, like the rest of the Mitch Rapp series, is fast-paced, irreverent at times, and hard-hitting as CIA Agent Rapp faces down anyone, foreign or domestic, to complete his mission. I enjoy Flynn’s writing style and the emotional twists he makes Rapp and the readers endure. 

By Vince Flynn ,

Why should I read it?

1 author picked Act of Treason as one of their favorite books, and they share why you should read it.

What is this book about?

THE NEW YORK TIMES NUMBER ONE BESTSELLER

Two weeks before the election - and presidential candidate Josh Alexander's motorcade is decimated by a terrorist bomb. Alexander survives the attack, although members of his entourage are not so lucky. It appears to be the work of al-Qaeda. But then CIA director Irene Kennedy is presented with classifed information so toxic that she considers destroying it altogether. Instead she summons Mitch Rapp, the one man reckless enough to follow the evidence to its explosive conclusion...

AMERICAN ASSASSIN, book one in the series, is soon to be a MAJOR MOTION PICTURE starring Dylan…


Book cover of The Last Patriot

Seth Sjostrom Author Of Patriot X

From my list on thrillers that kick terrorist butt.

Why am I passionate about this?

I have a fierce passion for justice. Studying political science in college, I keyed on moments in history where greed, power, and oppression marred human society. As a thriller writer myself (15 published titles and counting), I enjoy authors that understand the characters, settings, and combat sequences in their novels either through personal experience, training, or deep research. I work hard to ensure as wild as my characters’ adventures are, every detail is plausible. The books on this list are filled with raucous action and death-defying scenes while remaining possible. 

Seth's book list on thrillers that kick terrorist butt

Seth Sjostrom Why Seth loves this book

When I select a thriller, I like to find someone who has developed a deep knowledge of the subject and settings either through experience or deep research. Brad Thor is an expert on terrorism and global politics.

His character, former Navy SEAL Scot Harvath, is brash and brutal as he operates to counter-terrorism in his role as a covert Homeland Security Officer. In The Last Patriot, he chases a militant Islamic cell that is protecting a lost revelation of the Prophet Mohammed that could change derail terror forever.

I enjoy reading Brad Thor books for the intensive research and logic he weaves into his stories. Reading The Last Patriot, and other titles in the series is like having a conversation over a pair of fingers of whiskey talking global politics with my friends.

By Brad Thor ,

Why should I read it?

1 author picked The Last Patriot as one of their favorite books, and they share why you should read it.

What is this book about?

Brad Thor, master of suspense and #1 New York Times bestselling author is back with his highest-voltage thriller to date in which Navy SEAL turned covert Homeland Security operative Scot Harvath must race to locate an ancient secret that has the power to stop militant Islam dead in its tracks.

June 632 A.D.: Deep within the Uranah Valley of Mount Arafat in Mecca, the Prophet Mohammed shares with his closest companions a final and startling revelation. Within days, he is assassinated.

September 1789: U.S. Minister to France Thomas Jefferson, who is charged with forging a truce with the violent Muslim…


Book cover of Killing Floor
Book cover of The Black Echo
Book cover of The Puzzle Palace: A Report On NSA, America's Most Secret Agency

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