Here are 90 books that Into the Gray Zone fans have personally recommended if you like Into the Gray Zone. Book DNA is a community of 12,000+ authors and super readers sharing their favorite books with the world.

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Book cover of No One Will Miss Her

Arthur Herbert Author Of The Bones of Amoret

From my list on endings that make you go, “Whoooooaaaa”.

Why am I passionate about this?

I was born and raised in a small town in Texas, where I worked on offshore oil rigs as a bartender, a landscaper at a trailer park, and a social worker before attending medical school. I’ve worked as a trauma and burn surgeon for nineteen years. Living an exciting life has made me a better writer (like Hemingway said, “To write about life, first you must live it”), but it has little to do with my passion for mystery/suspense. I read this genre for the best reason, presumably the same as yours: I’m just a huge fan. I hope you enjoy these books as much as I did!

Arthur's book list on endings that make you go, “Whoooooaaaa”

Arthur Herbert Why Arthur loves this book

I’m not only a mystery/suspense writer but also a fan of the genre, as I read or listen to about forty whodunnits a year, just under one a week. I tend to read these books with one eye toward the superficial story, yes, but I also study them from a technical standpoint, saying to myself, “Oh, I see what the author did there,” “Man, that was a nice way to frame that conflict,” or, “What the hell? I think the author wrote that chapter by getting drunk and taping crayons to their feet.” The point I’m trying to make is that the plot devices and metaphors tend to blur together after a while. 

But this book? Man, it stood out. I mean, Kat Rosenfield had me hook, line, and sinkers with the book’s opening line, “My name is Lizzie Ouellette, and if you’re reading this, I’m already dead.” It's…

By Kat Rosenfield ,

Why should I read it?

2 authors picked No One Will Miss Her as one of their favorite books, and they share why you should read it.

What is this book about?


"Blade-sharp, whip-smart, and genuinely original - a thriller to refresh your faith in the genre, your belief that a story can still outpace and outsmart you."- A. J. Finn, #1 New York Times bestselling author of The Woman in The Window

"Clever and surprising...The superb character-driven plot delivers an astonishing, believable jolt."-Publishers Weekly (starred review)

"Deserves two big thumbs up. Readers will be gripped by this astonishing story in which one gasp-inducing twist follows on the heels of another. A unique page-turner that just begs to be turned into a movie." -Booklist (starred review)

A smart, witty, crackling novel of…


If you love Into the Gray Zone...

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 that it can disrupt the balance of power in the region. But what pilot would be crazy enough to run…

Book cover of Tapping the Billionaire

M. Malone Author Of Beg Me (Mess with Me)

From my list on romantic comedies to make you LOL in public.

Why am I passionate about this?

Hi! I’m M. Malone, a NYT, USA Today Bestseller, and RITA award winner. My ultimate goal in life is to make readers laugh in the most inappropriate places possible. When I moved away from home after college, it was difficult to make friends in a brand new city. Romantic comedies provided the joy I needed to go out into the real world and thrive. Now I get to make up stories that make other people laugh and in some cases pee their pants just a little (hey, I’m not judging).

M.'s book list on romantic comedies to make you LOL in public

M. Malone Why M. loves this book

Billionaire books are all the rage. Who doesn’t love a bit of fantasy, right? But this book takes it to an unexpected place when a woman who works for a dating app unknowingly matches with the boss of the whole company. It’s an unusual twist with the characters falling in love online and in person. Between copy room dance routines and cases of mistaken identity, this book will have you laughing until you cry. 

By Max Monroe ,

Why should I read it?

1 author picked Tapping the Billionaire as one of their favorite books, and they share why you should read it.

What is this book about?

A secret duo of romance authors team up under the pseudonym Max Monroe to bring you a sexy, laugh-out-loud new series. Are you ready to meet the Billionaire Bad Boys? Blind dates? Online dating profiles? Been there, done that. Georgia Cummings has zero luck with dating, and the era of the internet is not her friend. No matter how fast she runs, how many corners she turns, she can’t find her way out of this weird, alternate universe where men think dick pics are a replacement for small talk and getting to know a girl. One more crotch selfie and…


Book cover of Billionaire Wilderness: The Ultra-Wealthy and the Remaking of the American West

Kimberly Kay Hoang Author Of Spiderweb Capitalism: How Global Elites Exploit Frontier Markets

From my list on global financial elites.

Why am I passionate about this?

I am a professor of sociology at the University of Chicago, and I am interested in global capitalism, financial elites, and all aspects of how people broker capital deals. I am a scholar of anti-heroes who studies all of the ways that people play in the gray. My first book, Dealing in Desire, is an ethnography where I embedded myself in several different hostess bars to study the relationship between sex work and financial deal-making. I grew up in California but have lived most of my adult life in Ho Chi Minh City, Houston, Boston, and Chicago. 

Kimberly's book list on global financial elites

Kimberly Kay Hoang Why Kimberly loves this book

I loved this book because it takes you inside the exclusive world of the ultra-wealthy within the United States and shows how the richest are exploiting the natural environment in Teton County, Wyoming, to solve personal existential crises.

The author managed to get incredible access to prominent tech CEOs, Wall Street financiers, and other ultra-high-net-worth individuals who have moved to a place where they can profit from their environmental philanthropy while also contributing to ever-widening economic inequality by privatizing public goods. I thought this book provided a fair yet fascinating insight into the contradictions of philanthropy, which allow the rich to donate in ways that absolve themselves from the guilt of the inequality that they contribute to. 

By Justin Farrell ,

Why should I read it?

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

What is this book about?

A revealing look at the intersection of wealth, philanthropy, and conservation

Billionaire Wilderness takes you inside the exclusive world of the ultra-wealthy, showing how today's richest people are using the natural environment to solve the existential dilemmas they face. Justin Farrell spent five years in Teton County, Wyoming, the richest county in the United States, and a community where income inequality is the worst in the nation. He conducted hundreds of in-depth interviews, gaining unprecedented access to tech CEOs, Wall Street financiers, and other prominent figures in business and politics. He also talked with the rural poor who live among…


If you love Brad Taylor...

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 Naked in Death

Sarah Curtis Author Of Fire

From my list on swoon-worthy Alpha Male romance books.

Why am I passionate about this?

I have a confession to make. I’m a collector of book boyfriends (BBFs). Alpha males, to be precise. The more confident, successful, and assertive they are, the harder they fall for their heroine. It’s the “fall” that gets me every time. There is nothing more satisfying than falling in love right alongside the heroine. As not only a writer of romance but also an avid reader, I can go on and on about all the books I love, so it was hard to choose only five. This list is a small taste of some of my favorites. If you’re looking for a swoon-worthy BBF, reading these books is a must.  

Sarah's book list on swoon-worthy Alpha Male romance books

Sarah Curtis Why Sarah loves this book

Though last on this list, Roarke is by no means “last” in anything. Powerful, confident, insanely wealthy, and oh-so-sexy, Roarke is the epitome of the swoon-worthy alpha male.

Seeing his love for his lieutenant, Eve, I fell in love—and fell hard. I was hooked after book one, and 60 books later, I still can’t get enough.

By J.D. Robb ,

Why should I read it?

8 authors picked Naked in Death as one of their favorite books, and they share why you should read it.

What is this book about?

Crime and punishment is Lieutenant Eve Dallas's business. Murder her speciality. Named by the social worker who found her when she was a mere child roaming that city's streets, Eve Dallas is a New York police detective who lives for her job. In over ten years on the force, she's seen it all - and knows her survival depends on her instincts. But she's going against every warning telling her not to get involved with Roarke, a charismatic Irish billionaire - and a suspect in Eve's latest murder investigation. But passion and seduction have rules of their own, and it's…


Book cover of The Testament

D. Marshall Craig Author Of Cut to the Chase

From my list on thrillers twisted plots surprise endings.

Why am I passionate about this?

I have always loved reading fiction novels with a fast-paced plot and an unexpected ending that surprises me. In my own Dr. Kyle Chandler Thriller Series, I try to use this same thought-provoking pattern that also includes quick dialogue with an underlying sexual tension between the male and female protagonists to keep the readers’ interest. Using this, I feel I am conveying my passion for the characters and plot to the reader. I believe that this theme of fast-paced, twisting plots matched with surprise endings is shown with clarity in all five of the books I have recommended in this list.

D.'s book list on thrillers twisted plots surprise endings

D. Marshall Craig Why D. loves this book

While many of John Grisham’s novels are legal-based courtroom thrillers, this is not. As a result, I personally think this is one of his most interesting thrillers.

With a cadre of selfish family members circling the waters after the suicide death of their eccentric patriarch billionaire, the plot shifts to the wilds of the primitive Amazon rainforest as a recovering alcoholic attorney tries to track down the real heir to the vast family fortune.

I loved the vivid description of the water-filled jungle that made you feel right in the middle of the journey. His intense description of the protagonist fighting to overcome his lurking addiction while on his mission to make things right made you want to keep turning the pages until you reached the startling ending.

By John Grisham ,

Why should I read it?

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

What is this book about?

Troy Phelen is one of the richest men in the United States, and he's looking for a way to die.

He might just have found it.

Nate O'Riley is a high-powered Washington litigator who's lived hard and fast for too long. Emerging from his fourth stay in rehab, he knows returning to the real world is going to be murder.

Meanwhile Troy's estranged daughter walked away from the modern world and devoted her life to God, moving to the isolated deep jungles of Brazil.

When Troy dies and leaves a shocking will behind him, three lives collide with vast repercussions.…


Book cover of King of Wrath

Delaney Diamond Author Of Ethan

From my list on swoon-worthy heroes in romance.

Why am I passionate about this?

I’ve been a published romance author since 2010, but even before I published my first romance novel, I was an avid reader of the genre. In fact, I started at the very young age of eleven, checking out romance novels from my local public library. Over the years, I’ve read hundreds of books and found the ones that I enjoy the most have the most intriguing heroes who fall hard for the heroine. 

Delaney's book list on swoon-worthy heroes in romance

Delaney Diamond Why Delaney loves this book

This book has everything I love about the billionaire trope—a filthy rich alpha male used to controlling every aspect of his life falling hard for one woman. 

Dante and Vivian were forced into a marriage of convenience because Vivian’s father blackmailed Dante—unbeknownst to her. In the beginning, Dante is rude and unkind, but as the story progresses, Vivian gets under his skin—in a good way.

I got a kick out of watching him slowly fall in love with her and the way that love manifested in acts of kindness—big and small. Dante softened toward Vivian and became willing to do anything to make her happy. His transformation from a hateful brute to a loving future spouse was not only enjoyable to watch, there were times when I actually sighed because Vivian was a lucky chica indeed. 

By Ana Huang ,

Why should I read it?

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

What is this book about?

*A NEW YORK TIMES BESTSELLER*

An arranged marriage billionaire romance standalone from New York Times bestselling author and BookTok sensation Ana Huang.

She was my North Star, the brightest jewel in my sky.

Ruthless. Meticulous. Arrogant.

Billionaire CEO Dante Russo thrives on control, both personally and professionally.

He never planned to marry…until the threat of blackmail forces him into an engagement with a woman he barely knows.

Vivian Lau, jewelry heiress and daughter of his newest enemy. The wife he never wanted, and the weakness he never saw coming.

It doesn't matter how beautiful or charming she is. Dante will…


Book cover of Taking on the Billionaire

Christina Berry Author Of The Road Home

From my list on Native romance by Native authors.

Why am I passionate about this?

I am an award-winning author of sex-positive contemporary romance and a citizen of the Cherokee Nation. As a reader, I’ve grown weary of Native American romance characters who are mostly caricatures and stereotypes. Last year, I went on a quest to find romance stories that portrayed contemporary Native characters experiencing love as they navigated real life in the 21st century. And who better to tell those stories than Native authors using their own voice? Now that I’ve found several great Native romance authors, I want to share these recommendations far and wide. Come, come, read Native romance!

Christina's book list on Native romance by Native authors

Christina Berry Why Christina loves this book

I don’t usually read billionaire romance because the billionaires are often crappy humans, and I don’t enjoy reading about crappy people getting a happily-ever-after. This book was a great exception. Adam Redhawk isn’t just a billionaire, he’s an Eastern Band Cherokee billionaire who was taken from his home and community when he was a child. Now he’s hired a PI to help him find his long-lost siblings to reconnect with the past that was stolen from him. I enjoyed the romance and the characters a lot. If you read billionaire romance, let this be one of them.

By Robin Covington ,

Why should I read it?

1 author picked Taking on the Billionaire as one of their favorite books, and they share why you should read it.

What is this book about?

Will the woman he can’t resist be his downfall? Find out, only from USA TODAY bestselling author Robin Covington!

In the boardroom—and the bedroom—they’re on fire.

But will her secrets destroy them both?

Investigator Tess Lynch once helped Adam Redhawk find his Cherokee family. Now the self-made tech billionaire wants her to root out his company’s saboteur—and share his bed. But as passion builds between them, the private eye pursues a plan of her own—to get even for the way Adam’s adoptive father ruined hers. Until an unexpected pregnancy changes everything…

From Harlequin Desire: Luxury, scandal, desire—welcome to the lives…


Book cover of Davos Man: How the Billionaires Devoured the World

Carl Rhodes Author Of Stinking Rich: The Four Myths of the Good Billionaires

From my list on dangers of billionaires.

Why am I passionate about this?

My name is Carl Rhodes, and I am a Professor of Management and Organization at the University of Technology Sydney. Like many others, in recent years I have become increasingly concerned, sometimes angry even, about how the organization of business and the economy is creating massive economic injustice. I am convinced that the economic system that has billionaires at its apex is deeply unfair, creating hardship, pain, and even death for too many people around the world. I am also convinced that we do not have to accept this gross injustice as being inevitable. 

Carl's book list on dangers of billionaires

Carl Rhodes Why Carl loves this book

Davos is a small town in the Swiss Alps that is the venue for the World Economic Forum, an annual meeting where billionaires, politicians, and celebrities get together to try to come up with solutions to the world’s problems. Peter S. Goodman’s book focuses on what he calls the ‘Davos Men’–the Davos attending billionaires (who are largely men) who speak out about the world’s wrongs while exploiting the global economy for their own financial gain.

What I found especially revealing in Goodman’s book was his meticulous and unrelenting unraveling of the deceitful realities of billionaire power and his trenchant call for the government to free themselves of the vastly undue political influence of the ultra-rich. 

By Peter S. Goodman ,

Why should I read it?

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

What is this book about?

A San Francisco Chronicle Bestseller * An NPR Best Book of the Year

The New York Times's Global Economics Correspondent masterfully reveals how billionaires' systematic plunder of the world-brazenly accelerated during the pandemic-has transformed 21st-century life and dangerously destabilized democracy.

"Davos Man will be read a hundred years from now as a warning." -Evan Osnos

"Excellent. A powerful, fiery book, and it could well be an essential one." -NPR.org

The history of the last half century in America, Europe, and other major economies is in large part the story of wealth flowing upward. The most affluent people emerged from capitalism's…


Book cover of Stuck-Up Suit

Kathryn C. Kelly Author Of Savage Suit

From my list on billionaire romances on my keeper shelf.

Why am I passionate about this?

I’ve been reading romance since I was a teenager and writing them just as long. I have given workshops and panels, written a chapter on romance novels in a Kathryn Falk book, and was once the VP of SOLA. I have read thousands of books but few are memorable enough to become my favorites.

Kathryn's book list on billionaire romances on my keeper shelf

Kathryn C. Kelly Why Kathryn loves this book

I’m recommending this book because my book is part of the Cocky Hero World and is based on Stuck-Up Suit.

Long before my submission was accepted, I’d read Stuck-Up Suit and loved Soraya’s resilience and determination. She stood up for herself and her beliefs. We always knew her moods by her hair color, which was a great quirk to make her even more memorable and to always give the reader insight into her feelings.

Graham Morgan was a sexy billionaire with a traumatic past. As we got to know him, we realized he’s not stuck up but closed off because of emotional pain. We root for Graham to find happiness with the fiery Soraya, an everyday girl with an extraordinary personality.

By Vi Keeland , Penelope Ward ,

Why should I read it?

1 author picked Stuck-Up Suit as one of their favorite books, and they share why you should read it.

What is this book about?

It started out like any other morning on the train.
Until I became mesmerized by the guy sitting across the aisle.
He was barking at someone on his phone like he ruled the world.
Who did the stuck-up suit think he was...God?
Actually, he looked like a God. That was about it.
When his stop came, he got up suddenly and left. So suddenly, he dropped his phone on the way out.
I might have picked it up.
I might have gone through all of his photos and called some of the numbers.
I might have held onto the mystery…


Book cover of Deal with the Devil

Rose Thorgaard Author Of Treasured

From my list on action packed romance makes you feel larger than life.

Why am I passionate about this?

From the first time I snagged a romance book off my mother's shelf as a teenager, I've always been a hopeless romantic. I'm fascinated by love stories that feel like real life, entwined with the good, bad, and sometimes ugly. This is why I enjoy exploring the duality of life and love in my own novels as a romantic suspense author.

Rose's book list on action packed romance makes you feel larger than life

Rose Thorgaard Why Rose loves this book

This book made me angry with the main characters while wishing them the best. They're two sides of the same coin, and I love seeing the familiarity and deep bond form throughout the story.

Watching the two main characters slowly fall for each other and eventually fight for their love was satisfying.

By Meghan March ,

Why should I read it?

1 author picked Deal with the Devil as one of their favorite books, and they share why you should read it.

What is this book about?

“You can put that man in a suit, but he'll never be tame." One look at Jericho Forge and I knew the rumors were true. He was a predator, and he had set his sights on me.I knew better than to bet more than I could afford to lose that night. I knew better than to bet myself. But desperation leads to bad decisions, and I thought there was no way I could lose.I was wrong. Now I have no choice but to make a deal with the devil.


Book cover of No One Will Miss Her
Book cover of Tapping the Billionaire
Book cover of Billionaire Wilderness: The Ultra-Wealthy and the Remaking of the American West

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Interested in billionaires, kidnapping, and intelligence officers?

Billionaires 52 books
Kidnapping 123 books