The 6 Best Thriller Books on Kindle Unlimited

young brunette is sitting in headphones under tree in Park, watching video on tablet computer, she is surprised and scared.

Updated March 2023

If you’re not sure what Amazon’s Kindle Unlimited is, it’s simply a great subscription service that allows readers like you and me to devour an unlimited number of books for a flat monthly fee of $9.99. While not every published thriller is available through Kindle Unlimited, more books are added every month. Even traditionally published authors like Dean Koontz are now making their thrillers part of the Kindle Unlimited program.

Today, I bring you you six must-read thrillers that are free to read through Kindle Unlimited. These heart-pounding stories will keep you reading late at night, so plan on losing sleep!

Free Book Alert – Woot!

Before you dive into the books, download a free heart-pounding thriller from bestselling author Dan Padavona. This is a limited time offer, so hurry!

If you want more recommendations for creepy thrillers you can read for free in Kindle Unlimited, check out the heart-pounding Darkwater Cove series. But don’t read them after dark!

Step into the dark and read your FREE thriller from bestselling author Dan Padavona

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Dead End Girl — LT Vargus and Tim McBain

  LT Vargus - Violet Darger series


Her body is broken. Wrapped in plastic. Dumped on the side of the road. She is the first. There will be more.

The most recent body was discovered in the grease dumpster behind a Burger King. 

Dismembered. Shoved into two garbage bags and lowered into the murky oil.

Now rookie agent Violet Darger gets the most important assignment of her career. She travels to the Midwest to face a killer unlike anything she’s seen. Aggressive. Territorial. Deranged and driven.

Another mutilated corpse was found next to a roller rink. A third in the gutter in a residential neighborhood.

These bold displays of violence shock the rural community and rattle local law enforcement. Who could carry out such brutality? And why?

Unfortunately for Agent Darger, there’s little physical evidence to work with, and the only witnesses prove to be unreliable. The case seems hopeless. If she fails, more will die. He will kill again and again.

The victims harbor dark secrets. The clues twist and writhe and refuse to keep still. And the killer watches the investigation on the nightly news, gleeful to relive the violence, knowing that he can’t be stopped.


My Review!

If you cut your teeth on Criminal Minds and the Thomas Harris Hannibal Lecter novels, you’ll feel right at home with Dead End Girl. This hair-raising thriller follows two FBI Behavioral Analysis Unit profilers hunting a madman with a penchant for dismembering his victims.

Dead End Girl draws inspiration from classic genre authors John Sandford, Lisa Gardner, and Jeffery Deaver. The story hits you hard in the first twenty pages and refuses to relent.

Forgive me if I’m a little biased. Dead End Girl is not only one of my favorite books, the characters inspired my Scarlett Bell thriller series. But I wouldn’t steer you wrong. Fans of serial killer thrillers will feel right at home with LT Vargus and Tim McBain.

One warning. Graphic scenes add to the realism, so if a little gore makes you a lot squeamish, this one mayb be too intense for you. Highly recommended for fans of Patricia Cornwell as well as anyone looking for a morbid Kindle Unlimited read.


her last breath by dan padavona book cover  

Her Last Breath — Dan Padavona

My Review!

Oh boy, where do I even begin? 

Let me start by saying that I am proud to have been a part of this book. Her Last Breath is one of the most popular books on Kindle Unlimited, and readers have fallen in love with the characters.

Take Thomas Shepherd, a sheriff’s deputy with Asperger’s syndrome, who feels like a neighborly version of Will Graham from the Thomas Harris books.

If you’re looking for a thriller that will have you on the edge of your seat from beginning to end, then look no further than Her Last Breath, part of the Wolf Lake series.

Now, I don’t want to oversell this book. But I do think it’s a damn good book, and one that you should definitely check out if you’re a fan of the genre. 



He’s hunting a psychopath. And now the killer wants him dead.

After he’s shot in the line of duty, Detective Thomas Shepherd returns to Wolf Lake to pick up the pieces of his shattered life. Living beside the water, he finds peace…until the body of a missing woman washes up on his shore and the town blames a teenage boy with a history of violence.

Is a killer stalking the sleepy resort village?

Thomas isn’t convinced the teenager committed murder. Challenging a village that wants justice at any cost, he pursues the real killer as evidence mounts against the teenager. If he fails, an innocent boy will go to prison.

Can Thomas clear the boy’s name before he becomes the killer’s next victim?


Don’t Lie to Me — Willow Rose

SynopsisWhen twelve-year-old Sophie Williams went on a Girl Scout summer camp, she never returned home.

Three months later, her body is found inside her sleeping bag in the most frequented area of Cocoa Beach, and the town is outraged.

The girl isn’t just any child. She’s the town’s most beloved surf idol, and it was believed that she could be the next Kelly Slater.

As another child, the son of a well-known senator, is kidnapped, and the parents receive a disturbing video, FBI profiler Eva Rae Thomas — who has just returned to her hometown, divorced and out of a job — plunges into the investigation, breaking her promise to her children not to do police work again.

With her old flame Matt Miller in charge, local law enforcement are the ones who ask for her help in a case so unsettling that only she can solve it. But the deeper they dig, the deadlier it becomes for Matt and Eva Rae.

Soon, everyone she holds dear is in grave danger as this case hits a little too close to home.

My Review!

Bestselling author Willow Rose deftly straddles the line between dark thrillers and classic horror. Her novels drip with suspense, and Don’t Lie to Me is no exception. This first entry in the Eva Rae Thomas mystery series tells the tale of a locally famous teenager who turns up dead. 

If you like Kindle Unlimited thrillers that keep you on your toes, Don’t Lie to Me is an absolute must. Five stars all the way, this intense and frightening read was totally enthralling, and it kept me hooked from start to finish. 

It’s also a super fast read, so don’t worry if you’re short on time. Willow Rose has mastered the art of weaving suspense into a captivating story that had me wanting more at the end. It’s easily one of the best Kindle thrillers you can find on Kindle Unlimited. There was never a dull moment!

Full of twists and turns, Don’t Lie to Me is the perfect read for fans of dark thrillers.


dawn girl leslie wolfe

Dawn Girl — Leslie Wolfe

My Review!

If you’re looking for a good mystery, I highly suggest Dawn Girl by Leslie Wolfe. This book was so fast-paced and suspenseful, I devoured it in one afternoon. 

While the title of Leslie Wolfe’s Dawn Girl draws obvious inspiration from Gone Girl by Gillian Flynn, the comparisons stop there. 

If you’re looking for one of the best Kindle Unlimited thrillers out there, then you should definitely check this one out. Trust me, once you start this book, it’s practically impossible to put down and it won’t be long before you’ve devoured it whole!

Tess is a badass FBI Agent who’s not afraid to go against authority to get the job done. The exceptional writing style features a unique blend of engaging thrill-style plot with high-quality writing that amazes. Don’t miss out on this Kindle Unlimited gem and be sure to get your copy!

SynopsisHer beautiful face is caught in the final moment of death, lips slightly parted where the last breath escaped. Her unseeing blue eyes are wide and fearful. A few flecks of sand, sparkling in the morning light, cling to her long, dark lashes.

Who is the beautiful girl found dead at dawn on a deserted stretch of golden sand? What is her secret?

FBI Special Agent Tess Winnett searches for the answers to the baffling crime and with each step, each new clue uncovered, she unravels more unsettling facts that lead her to a single possible conclusion: Dawn Girl is not the first. Her killer has done this before.

Hiding a terrible secret of her own, Tess must face her innermost fears in a heart-stopping race to catch a killer who’s getting ready to strike again. But can she find him in time and prevent another murder? And even if she does, what will the personal cost be?

The rules of the game have changed. And so now, has the definition of a serial killer.

Special Agent Tess Winnett is the bold, direct, and short-fused heroine of Dawn Girl. Putting her life on the line, she doesn’t pull any punches as she searches for the truth and for the man who is taking lives on her watch. 

Intelligent, resourceful, and uncompromising, Tess will take readers on a memorable, white-knuckled journey in this suspenseful and gripping psychological thriller.


Abducted — T.R. Ragan

 SynopsisWhen Lizzy Gardner was only seventeen, what should have been the perfect night became the perfect nightmare. Kidnapped just blocks from home after a romantic evening with her boyfriend, Jared, she woke up to find herself at the mercy of a depraved serial killer. 

Imprisoned and tormented for months by the maniac she came to know as Spiderman, Lizzy narrowly escaped, the only one of his victims to survive. But Spiderman escaped too, outwitting police and cursing Lizzy to spend her life looking over her shoulder…

Fourteen years later, Lizzy is a private investigator who teaches self-defense to teenage girls in her free time. She does what she can to help others protect themselves and to forget the horror of her ordeal, yet fears she will always be known as “the one who got away.”

Then she receives a phone call from Jared, now a special agent for the FBI, with grim news. The killer has resurfaced, this time with a very specific target—Lizzy. And he’s made it clear that she will not escape him again. So begins a chilling game of cat-and-mouse, a terrifying, heart-pounding hunt that only one will survive.

My Review!

If spiders terrify you, you might want to run in the opposite direction. Fast.

Abducted was the first thriller I read by T.R. Ragan, and I loved it so much that I raced through the entire Lizzy Gardner series in a matter of weeks.

With a tightly written and highly tense plot, this book kept my attention from start to finish! Even though it was deeply disturbing at parts, I was happily captivated throughout reading it. For those who are in the mood for thrilling mystery novels, Abducted should definitely be at the top of your list!

Abducted is the kind of Kindle Unlimited thriller you keep talking about even days after reading. It’s just that kind of book! It’s one of the best Kindle Unlimited thrillers I’ve ever come across, with tension that’s palpable from start to finish. If you’re looking for a truly thrilling adventure, this is a must-read — and probably one of the best Kindle Unlimited books I’ve ever read!


Cross Her Heart — Melinda Leigh

My Review!

Reading Cross Her Heart by Melinda Leigh was an absolute thrill ride that I simply had to keep coming back to for more. As fans of her Morgan Dane series can attest, Melinda has a knack for Kindle Unlimited thrills and this installment proved to be one of her best Kindle reads. 

Following Bree Taggert on her tumultuous journey full of fast-paced action and unexpected plot twists, it quickly became one of the best thriller novels I’ve encountered in a long time. 

Even though typically I can figure out the story pretty easily, this time around I was truly taken aback by Melinda’s ability to remain unpredictable! If you’re looking for exciting Kindle reads, Cross Her Heart is it. Don’t miss out!


A homicide detective’s violent family history repeats itself in #1 Amazon Charts and Wall Street Journal bestselling author Melinda Leigh’s novel of murder, secrets, and retribution.

For more than twenty-five years, Philadelphia homicide detective Bree Taggert has tucked away the nightmarish childhood memories of her parents’ murder-suicide…until her younger sister, Erin, is killed in a crime that echoes that tragic night: innocent witnesses and a stormy marriage that ended in gunfire. There’s just one chilling difference. Erin’s husband, Justin, has vanished.

Bree knows how explosive the line between love and hate can be, yet the evidence against her troubled brother-in-law isn’t adding up. 

Teaming up with Justin’s old friend, former sheriff’s investigator and K-9 handler Matt Flynn, Bree vows to uncover the secrets of her sister’s life and death, as she promised Erin’s children. But as her investigation unfolds, the danger hits close to home.

Once again, Bree’s family is caught in a death grip. And this time, it could be fatal for her. 

Darkwater Cove crime thriller


A killer is watching . . .

She’s running from a psychopath. And he knows what frightens her.

After she’s stabbed in the line of duty, FBI Agent Darcy Gellar moves her family to a sleepy seaside community. Living beside the ocean, she finds tranquility…until the police discover the body of a murdered woman on the beach. The village blames her son, a misunderstood boy with anger issues.

Is a serial killer stalking Darkwater Cove?

Darcy knows the boy is innocent. But how does she convince an aggressive police detective? If she fails, her son will go to prison, and the murderer will strike again.

Can Darcy save her child from the police and a bloodthirsty killer?

Of course, you could also read a chilling Kindle thriller by the writer you know and love, Dan Padavona! If you’re looking for a heart-pounding story for your Kindle, give Dead and Buried a try. I’ve made Dead and Buried free to download, so get ready for some serial killer thrills and heart-stopping suspense.

If you want more recommendations then check out my list of the best serial killer thriller books on Kindle Unlimited, or my list of the best thriller book series!

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