Here are 100 books that The Troubled Deep fans have personally recommended if you like The Troubled Deep. Book DNA is a community of 13,000+ authors and super readers sharing their favorite books with the world.

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Book cover of The Keeper of Lost Causes: The First Department Q Novel

Jo Jakeman Author Of The Vanishing Act

From my list on books with the allure of a cold case.

Why am I passionate about this?

It’s hard to pinpoint where my interest in cold cases began, but I remember reading about the Isdal Woman and being intrigued. She was found in Norway in 1970, badly burned, with the labels cut off her clothes. Police discovered fake identities and disguises in suitcases left at the railway station, but, to this day, have no idea who she was. I’m a member of several Facebook groups where people investigate cold cases, and I’m always amazed at how these clues can be put together so many years later. Or, in some cases, how some people go unnamed, or crimes unsolved despite all the resources at our fingertips.

Jo's book list on books with the allure of a cold case

Jo Jakeman Why Jo loves this book

I have to confess that I discovered these books after watching the TV series Department Q. As soon as I saw "Based on the books by Jussi Adler-Olsen," I knew I had to read them.

The books differ significantly from the TV show. For one thing, they are set in Copenhagen, not Scotland. But the dark humour and clever plots are still the same. In this, the first of the series, Carl Morck—who is recovering from an incident where two of his colleagues were shot—is made the head of Department Q, looking into cold cases.

His first case is the disappearance of a politician who we know is still alive, but no one—apart from Morck—is looking for him anymore, assuming he fell off a ferry.

By Jussi Adler-Olsen ,

Why should I read it?

5 authors picked The Keeper of Lost Causes as one of their favorite books, and they share why you should read it.

What is this book about?

Get to know the detective in charge of Copenhagen's coldest cases in the first electrifying Department Q mystery from New York Times bestselling author Jussi Adler-Olsen.

Carl Morck used to be one of Denmark's best homicide detectives. Then a hail of bullets destroyed the lives of two fellow cops, and Carl-who didn't draw his weapon-blames himself. So a promotion is the last thing he expects. But Department Q is a department of one, and Carl's got only a stack of cold cases for company. His colleagues snicker, but Carl may have the last laugh, because one file keeps nagging at…


If you love The Troubled Deep...

Book cover of December on 5C4

December on 5C4 by Adam Strassberg,

Magical realism meets the magic of Christmas in this mix of Jewish, New Testament, and Santa stories–all reenacted in an urban psychiatric hospital!

On locked ward 5C4, Josh, a patient with many similarities to Jesus, is hospitalized concurrently with Nick, a patient with many similarities to Santa. The two argue…

Book cover of Before She Disappeared

Jo Jakeman Author Of The Vanishing Act

From my list on books with the allure of a cold case.

Why am I passionate about this?

It’s hard to pinpoint where my interest in cold cases began, but I remember reading about the Isdal Woman and being intrigued. She was found in Norway in 1970, badly burned, with the labels cut off her clothes. Police discovered fake identities and disguises in suitcases left at the railway station, but, to this day, have no idea who she was. I’m a member of several Facebook groups where people investigate cold cases, and I’m always amazed at how these clues can be put together so many years later. Or, in some cases, how some people go unnamed, or crimes unsolved despite all the resources at our fingertips.

Jo's book list on books with the allure of a cold case

Jo Jakeman Why Jo loves this book

A small town bursting with secrets? A loner protagonist who is smart and funny, with a lot to prove? Where do I sign up?

Frankie Elkin is on a one-woman mission to find missing people that everyone else has given up on. She goes to Boston to look for a missing teenager but encounters a fair amount of resistance when she starts asking questions.

This book has a lot of heart and is one of those that demands to be read in one sitting.

Book cover of Listen for the Lie

Nicola Sanders Author Of Don't Believe Her

From my list on gaslighting by the people you love most.

Why am I passionate about this?

I write psychological thrillers, and I find stories where the main character thinks they’re going crazy, particularly gripping, especially when it’s caused by (supposed) loved ones. I suspect it’s because these stories share an element of "this could happen to me." I’ve only written three books, but I’d say all of them have an element of gaslighting, probably because I sit down and think things like, What would it feel like if your best friend came back after many years, and you’re the only one who can tell it’s not her? It’s a deliciously creepy way to pass the time. 

Nicola's book list on gaslighting by the people you love most

Nicola Sanders Why Nicola loves this book

Lucy's best friend Savannah was murdered, and Lucy is suspected of having killed her. But Lucy can't remember anything about that night. Convenient? Plenty of people think so, including those closest to her. Is Lucy doing the gaslighting?

This plot is masterfully constructed, and I can’t say much more without spoilers. I loved it, and the gaslighting is out of this world.

By Amy Tintera ,

Why should I read it?

6 authors picked Listen for the Lie as one of their favorite books, and they share why you should read it.

What is this book about?

**RICHARD & JUDY BOOK CLUB PICK**
**INSTANT NEW YORK TIMES BESTSELLER**
**THE SUNDAY TIMES 'PICK OF THE MONTH'**
**PRIMA 'BOOK OF THE YEAR'**
**WOMAN & HOME 'BOOK OF THE YEAR'**
**WOMAN & HOME 'BOOK OF THE MONTH'**
**TOP TEN KINDLE BESTSELLER**

'Edgy, thrilling, twisty - I loved it!' - LIANE MORIARTY
'A world-class whodunit' - STEPHEN KING
'Dark comedy and darker thrills' - ALEX MICHAELIDES
'Smart, surprising and very funny - wickedly entertaining' - SHARI LAPENA

Am I a murderer? You tell me . . .

Lucy Chase can't remember anything about the night her best friend was murdered.
Lucky…


If you love Rob Parker...

Book cover of Katie’s Gamble

Katie’s Gamble by Kara O'Neal,

Katie's Gamble is an unexpected, unique story about a young woman who's trying to support her younger siblings by keeping her family's confectionery shop open.

In order to do that, she has to take on her older brother, who's a notorious gambler in Louisiana. Additionally, she has to outsmart Rowdy…

Book cover of The Summer Guests

Jo Jakeman Author Of The Vanishing Act

From my list on books with the allure of a cold case.

Why am I passionate about this?

It’s hard to pinpoint where my interest in cold cases began, but I remember reading about the Isdal Woman and being intrigued. She was found in Norway in 1970, badly burned, with the labels cut off her clothes. Police discovered fake identities and disguises in suitcases left at the railway station, but, to this day, have no idea who she was. I’m a member of several Facebook groups where people investigate cold cases, and I’m always amazed at how these clues can be put together so many years later. Or, in some cases, how some people go unnamed, or crimes unsolved despite all the resources at our fingertips.

Jo's book list on books with the allure of a cold case

Jo Jakeman Why Jo loves this book

I read this while recuperating from an operation, and it was the pick-me-up I needed.

What starts off as a current missing person’s case becomes an investigation into a cold case as it comes to light that the two cases could be linked. The sleuths in this case are retired spies, The Martini Club, and they are such a fun group of characters. It’s the second book of Tess Gerritsen’s to feature this cast of characters, and they have skills to outdo the local police chief, Jo—and occasionally get in her way.

By Tess Gerritsen ,

Why should I read it?

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

What is this book about?

INCLUDES A BONUS SHORT STORY BY LEE CHILD AND TESS GERRITSEN, STARRING JACK REACHER AND THE ENIGMATIC MAGGIE BIRD. . .

The Summer Guests is the exhilarating and gripping new thriller from Sunday Times bestselling author of The Spy Coast.

SPECIAL HARDBACK LIMITED EDITION - AVAILABLE WHILE STOCKS LAST

'I love this new series . . . The Summer Guests is a cracker of a mystery! I couldn't put it down.'
SHARI LAPENA

'What a ride - The Summer Guests hooked me from the first explosive chapter. . . Immersive, compelling, utterly addictive - a masterclass in storytelling.'
ANDREA MARA,…


Book cover of Truly Devious

Elisabeth Wathen Author Of Glorious Debris

From my list on loving character development as much as getting a new mystery every time.

Why am I passionate about this?

Mysteries are fun to write, but it’s never just the central mystery that interests me. I want the relationships, the people, sometimes even the place to fill my books with their own smaller puzzles and hidden truths. I have long believed that all novels are, in fact, mysteries: if you’re not wondering what will happen next, or where the truth lies, why bother? The suspense of wondering what a character will do next, or what past experience has led to an aspect of their personality, is at least as important as who committed the murder. I hope that my readers will feel the same.

Elisabeth's book list on loving character development as much as getting a new mystery every time

Elisabeth Wathen Why Elisabeth loves this book

Though marketed for a YA audience, this book easily crosses over to appeal to all readers, as long as they love a good mystery and some quality character growth.

Main character Stevie Bell loves true crime, and she makes it clear right from the start that she’s not interested in wasting her time with much else. Something of a misfit with a healthy dose of impostor’s syndrome, she’s got something to prove and plenty of stumbling blocks that get in the way. But she is fiercely devoted to finding answers, even to the point of recklessness.

Hints at future romance—never her priority, yet persistently unavoidable—along with her passion, intelligence, and disregard for the rules make her a heroine you can happily follow through several books.  

By Maureen Johnson ,

Why should I read it?

5 authors picked Truly Devious as one of their favorite books, and they share why you should read it. This book is for kids age 14, 15, 16, and 17.

What is this book about?

From New York Times bestselling author Maureen Johnson comes the start of a new series about a sharp and funny young detective named Stevie Bell who begins school at an elite, yet peculiar, boarding school and finds herself entangled in a murder mystery; perfect for fans of 13 LITTLE BLUE ENVELOPES.

New York Times bestselling author Maureen Johnson weaves a delicate tale of murder and mystery in the first book of a striking new series, perfect for fans of Agatha Christie and E. Lockhart.

Ellingham Academy is a famous private school in Vermont for the brightest thinkers, inventors,…


Book cover of Horses of Heaven

Lauren Willig Author Of Two Wars and a Wedding

From my list on historical fiction in unusual time periods.

Why am I passionate about this?

I grew up in the era of sweeping historical epics, traveling with the turn of a page from Gaius Marius’s Rome to Victoria’s England and everything in between. I’ve always loved books that immerse you in places and time periods you know nothing about—and when I couldn’t find enough of them, I started writing my own. While my long-ago history PhD work is in Tudor-Stuart England (my specialty was the English Civil War), what I love most is being a historical dilettante and getting to hop around the historical record—which may be why my books can take you anywhere from Napoleon’s court to 1920s Kenya to Cuba with Teddy Roosevelt!

Lauren's book list on historical fiction in unusual time periods

Lauren Willig Why Lauren loves this book

I don’t know about you, but when I learned history in elementary school, we skipped straight from Ancient Greece and Rome to the Norman Conquest with the briefest of nods at Byzantium to acknowledge there was something in between. It was all very simple and straightforward—and completely left out the crumbling kingdoms left behind in the wake of the fall of Alexander the Great’s Empire.

I can still remember opening Gillian Bradshaw’s Horses of Heaven for the first time and thinking, “What’s Ferghana? Or Bactra?” Gillian Bradshaw wrote a number of books set in the wake of Alexander’s empire, but this one is the one that really stuck with me, told through the eyes of a girl picked to go as attendant to a Greek aristocrat from Bactra being married to King Mauakes of Ferghana (now Afghanistan).

By Gillian Bradshaw ,

Why should I read it?

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

What is this book about?

Heliokleia, a young princess of Bactria, is allied in a mismatched marriage to the ruler of Ferghana, but she realizes too late that the king's son, Itaz, is her true soulmate


If you love The Troubled Deep...

Book cover of The Delphi Agenda

The Delphi Agenda by Rob Swigart,

Papyrologist Lisa Emmer's world flips when the Sûreté detains her at her Metro station with news of the savage murder of the esteemed Paris historian Dr. Raimond Foix, her friend and mentor in the study of ancient documents.

Horrified, Lisa finds clues at the crime scene left behind for her…

Book cover of Moscow Exile

Mark McKay Author Of A Terminal Agenda

From my list on the authentic world of espionage.

Why am I passionate about this?

I’ve been into spy stories for many years. I love the intrigue, the deception, the secrecy of that world. Of course, real spying may involve lots of periods of doing nothing, possibly followed by manic, dangerous action. All while dealing with the anxiety of hiding the fact that you might be a traitor to your country or simply not the person the world thinks you are. It’s a fascinating world, and that fascination is what draws me in.

Mark's book list on the authentic world of espionage

Mark McKay Why Mark loves this book

I really love the characters in this book. It’s the fourth book in a series, but I read this out of order, which meant I didn’t have the benefit of some of the backstory for one or two people. This is a story of treachery and betrayal, and spies that stay in the game for years before getting out or getting caught. 

By John Lawton ,

Why should I read it?

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

What is this book about?

From "quite possibly the best historical novelist we have" (Philadelphia Inquirer), the fourth Joe Wilderness spy thriller, moving from Red Scare-era Washington, D.C. to a KGB prison near Moscow's Kremlin

In Moscow Exile, John Lawton departs from his usual stomping grounds of England and Germany to jump across the Atlantic to Washington, D.C., in the fragile postwar period where the Red Scare is growing noisier every day.

Charlotte is a British expatriate who has recently settled in the nation's capital with her second husband, a man who looks intriguingly like Clark Gable, but her enviable dinner parties and soirees aren't…


Book cover of Still

Laney Kaye Author Of Malicious Desire

From my list on traveling australian outback from home.

Why am I passionate about this?

As a professional counselor by trade, I’m fascinated by the machinations of the human mind, what drives us, and how our primeval urges can overcome our learned and acceptable behaviors. Accordingly, I enjoy both reading and writing books that expose and explore the dark side of our psyche and the dichotomy of human nature. I particularly appreciate stories that balance evil with redemption, rescue, or retribution. 

Laney's book list on traveling australian outback from home

Laney Kaye Why Laney loves this book

I love a tense, character-driven thriller, and this one was set in a remote town I’ve visited. 

I love that the book is set in 1963, a decade that had particular significance for Australian women, their roles, and the expectations placed upon them.

It’s not fast-moving, but the setting is an almost palpable character in its own right. I found it dark, rife with corruption, violence, oppressive heat, and both the best and the worst of what Australia has to offer.

By Matt Nable ,

Why should I read it?

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

What is this book about?

THE #1 Australian best-selling fiction

'From screen to page, Matt Nable's ability to breathe life into vivid characters shines against the grittiness of the harsh Australian landscape.' - Jane Harper, author of The Dry

'a thrilling, heart-stopping novel that fans of The Dry are going to love' - Weekender

'Nable renders the past both tangible and real and it's riveting' - Sue Turnbull, The Age

'must read' - Who Weekly

Darwin, Summer, 1963.

The humidity sat heavy and thick over the town as Senior Constable Ned Potter looked down at a body that had been dragged from the shallow marshland.…


If you love Rob Parker...

Book cover of The Tao of Poison

The Tao of Poison by Isham Cook,

A poisonous maiden, a Daoist sex cult, and a violent insurgency.

The polyandrous Yan family in China's rural Shaanxi Province takes in two carpenter brothers. When one brother is convicted of murder after killing their neighbor in a dispute, a constable threatens to expose the family's rumored polyandry and extorts…

Book cover of Thin Air

Elana Gomel Author Of Nine Levels

From my list on mountain climbing for non-climbers.

Why am I passionate about this?

I always want to be where I am not. This was why I read sci-fi and fantasy as a child. This was why I left the country of my birth and became a professional nomad. This is why I am spellbound by mountains I will never climb and oceans I will never dive into. Imagination can take you everywhere. It took me to the academy, where speculative literature became my scholarly field, and to the publishing world, where I am now getting ready for the launch of my eighth novel. When you are at home nowhere, you are at home everywhere–including on the summits of impossible mountains.

Elana's book list on mountain climbing for non-climbers

Elana Gomel Why Elana loves this book

I love ghost stories. But I am rather tired of old houses with creaky furniture. The strangest and most dangerous monsters lurk in the wilderness, in the remote and inaccessible corners of the natural world. And what is more remote and inaccessible than Kanchenjunga, the third-highest mountain in the world, located on the border between Nepal and India?

I have always admired those mountain climbers of the past who, with inadequate equipment and minimal knowledge, braved the unknown dangers of the heights. Paver’s beautifully written novel is a historical mystery and a ghost story at one, whose final twist is as vertiginous as the pinnacle of the sacred mountain. 

By Michelle Paver ,

Why should I read it?

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

What is this book about?

The Himalayas, 1935.

Kangchenjunga. The sacred mountain. Biggest killer of them all.

Five Englishmen set out to conquer it. But courage can only take them so far. And the higher they climb, the darker it gets.


Book cover of The Keeper of Lost Causes: The First Department Q Novel
Book cover of Before She Disappeared
Book cover of Listen for the Lie

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