Thriller


A Key Murphy Ancestral Memory Thriller Series

The Key to Kells (A Key Murphy Ancestral Memory Thriller Book 1)

The Key to Kells (A Key Murphy Ancestral Memory Thriller Book 1) by Kevin Barry O’Connor: A rare genetic mutation gives Key Murphy access to the memories of an ancestor who guarded Ireland’s greatest treasure. With the captivating Arin Murphy by his side, Key must solve a centuries-old mystery—while their growing attraction threatens to derail everything. Perfect for fans of Dan Brown – thrilling, historical, and impossible to put down.

This book is Free on June 12, 2025

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Dead Landlords and Covert Ops: Free Mystery eBooks

Witch for Hire (Paranormal Temp Agency Book 1)

Witch for Hire (Paranormal Temp Agency Book 1) by Molly Fitz: From a USA Today bestselling author: When Tawny Bigford finds her landlady’s corpse, she must take the deceased’s place as Beech Grove’s official town witch! Now Tawny has to prove her own innocence while adjusting to her newfound powers and snarky boss — who happens to be a talking cat.

This book is Free on June 12, 2025

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The Marked Girl

The Marked Girl by James Hunt: A young girl found stranded on a raft off the coast of Baja California is marked for death by a violent gang. Shunned by locals for fear of retribution, ex-pat Chase Grant is unable to leave the girl to her fate. But the girl isn’t the only one with secrets, and Grant’s past will be thrust into the present as it threatens to upend the second chance he was given with his family.

This book is Free on June 12, 2025

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A Lark's Tale (Verity Lark Mysteries Book 1)

A Lark’s Tale (Verity Lark Mysteries Book 1) by Lynn Messina: Verity Lark knows everything. London’s fiercest gossip, she’s adept at sneaking into houses, wearing disguises and managing spies to ensure she stays abreast of society. But nobody knows her—at least that’s what she thinks until she stumbles across a plot to kill her.

This book is Free on June 12, 2025

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Chasing Shadows

Chasing Shadows by A.C. Adams: When renowned professor Dr. Aidan Ryan vanishes, he leaves behind a haunting message revealing a new life and can never return. His devastated daughter Sofia embarks on a global search to uncover the truth; what she finds is more shocking than she could have imagined—a web of family secrets and lies that challenge everything she thought she knew.

This book is Free on June 12, 2025

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Dupree's Rebirth (The Adam Dupree Legal Suspense Quadrilogy Book 1)

Dupree’s Rebirth (The Adam Dupree Legal Suspense Quadrilogy Book 1) by Micheal Maxwell: Right or Left? Life or Death? That one decision sends Adam Dupree on an epic journey of rediscovery as he attempts to understand the mystery inside himself. Part Steinbeck, part Faulkner, part Grisham, but all Micheal Maxwell. A thousand miles of danger to find peace at the end of the road. Or does he? Come along for the ride and see.

This book is Free on June 12, 2025

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Desert Highway

Desert Highway by Sam Baron: In the new ‘Baker & Tate’ mystery, Ruth and Aaron face a sniper’s deadly game on a remote desert highway where escape is impossible. As they dig deeper, they uncover ties to a death cult whose dark secrets may hold the key to the case. With each discovery, the snipers grow bolder, targeting anyone who gets too close, including Ruth herself.

This book is Free on June 12, 2025

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Broken Doll (Dirty Doll Ops Book 1)

Broken Doll (Dirty Doll Ops Book 1) by Alexx Andria: She thought she was the bait. Turns out, she’s the weapon. Landry James is pulled into a covert black-ops unit where seduction is strategy—and trust is a liability. But beneath the surface, lies are currency, and betrayal is survival. Nothing is what it seems. And Landry? She’s the most dangerous secret of all.

This book is Free on June 12, 2025

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It's Not About Sex

It’s Not About Sex by David Kalergis: A sharp, darkly humorous psychological thriller where class privilege and human frailty collide.What starts as an introduction into high society and a second chance at life soon spirals into a dangerous game of betrayal, adultery, and murder.

This book is Free on June 12, 2025

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Reflections

Reflections by Nick Vulich: A haunted mirror, forgotten murders, and a woman unraveling across time. Reflections is a gothic thriller where the scariest thing in the house might be your own reflection.

This book is Free on June 12, 2025

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Helix Protocol

Helix Protocol by TJ Swift: A rogue data operative. A lethal drug trial. Hired to expose a pharma giant’s darkest secret, Jace Mercer uncovers the price of corporate greed—measured in bodies. What he finds doesn’t just change the mission. It changes him. With Sage—his AI agent and operator—looping cams and ghosting trails. Prequel to Midnight Burn. Free a short time only.

This book is Free on June 12, 2025

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Accomplices and Pandemics: Free Mystery eBooks

Monday Morning Blues (The Friday Night Mystery Club Book 2)

Monday Morning Blues (The Friday Night Mystery Club Book 2) by Joanna Campbell Slan: Being a divorced career woman in the late 80s isn’t easy. Cragan Collins finds the friendship of other working singles. When Cragan finds a saleswoman unconscious in the mall parking lot, she runs for help. But being a Good Samaritan means taking the blame when the other woman dies. Later, Cragan learns the woman lied to her…repeatedly.

This book is Free on June 11, 2025

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Cruel Summer (Trespassing Book 3)

Cruel Summer (Trespassing Book 3) by P.W. Creighton: Isolated, a chance encounter helps Logan to realize that he’s not quite as alone as he thought. His new accomplice, Devin, shows him that not everyone wealthy is untrustworthy. She has her own secrets, and is willing to confide in him in exchange for his help. They’re starting to suspect that the spiral of death and tragedy is only just beginning.

This book is Free on June 11, 2025

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Swerve

Swerve by Jonathan Maas: One moment, one decision, one flick of the wheel, and a good man finds himself enmeshed in a dangerous mystery beyond his comprehension. Read the Domestic Thriller ‘Swerve’ free on Kindle!

This book is Free on June 11, 2025

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The Fruitcake

The Fruitcake by Leah Orr: Love Desperate Housewives? You’ll love The Fruitcake. 4 friends, 1 fruitcake, and a ritzy town full of secrets… What could go wrong?

This book is Free on June 11, 2025

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Squeeze Plays

Squeeze Plays by Jeffrey Marshall: Set chiefly in New York and London, the novel finds a bank CEO and a tabloid publisher at odds over a loan. A cunning Russian oligarch offers to rescue the publisher. An investigative reporter then probes this financing and delivers a front-page exposé. Along the way, there is financial and sexual blackmail and an often satirical take on events.

This book is Free on June 11, 2025

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Hurst (The Hurst Chronicles Book 1)

Hurst (The Hurst Chronicles Book 1) by Robin Crumby: Where would you go to survive the end of the world? Grab book one in this gripping dystopian series set at a medieval castle in the aftermath of a deadly pandemic. Scraping a living, scavenging for food and supplies in a lawless society without electricity or government. There is no time to mourn. Survival is all that matters.

This book is Free on June 11, 2025

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Sunship

Sunship by Maggie Morris Wyllie: Siva, once an astronomer in Alexandria, now finds himself far from the secrets of the cosmos, thrust into the blood-soaked lands of Roman Britain, where he must choose between the world he once knew and the brutal reality of war.

This book is Free on June 11, 2025

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Ghost Hunters and Nosy Reporters: Free Mystery eBooks

Treachery on Tap (The Grumpy Chicken Irish Pub Series Book 2)

Treachery on Tap (The Grumpy Chicken Irish Pub Series Book 2) by Constance Barker: When ghost hunters descend on the Grumpy Chicken Bar, the bird is none too pleased. Did the ghost chicken have a hand in eliminating one of the hunters? Find out in Treachery on Tap.

This book is Free on June 10, 2025

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On the Border (A Samantha Church Mystery Book 5)

On the Border (A Samantha Church Mystery Book 5) by Betta Ferrendelli: Newspaper reporter Samantha Church works with a cub reporter to uncover a scheme involving murder, money laundering and undocumented workers.

This book is Free on June 10, 2025

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51st Directive

51st Directive by Michael Agliolo: In the event of a “catastrophic emergency”, the 51st Directive grants the President of the United States the power to take complete control of Congress and the Supreme Court. This novel will scare you… should scare you. It’s right out of today’s headlines, and no one knows it exists. It does.

This book is Free on June 10, 2025

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The Millennium Code

The Millennium Code by Michael Agliolo: An ancient object discovered in a limestone cave in the holy land. A Russian oligarch who will stop at nothing to possess it. Take a thrill ride in author Michael Agliolo’s 4th novel and journey with Professor Lena Thurman and Geneticist Kyle Anderson as they uncover the power of the artifact that has the capacity to save humanity or destroy it.

This book is Free on June 10, 2025

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Eye of Athena

Eye of Athena by Holly Knightley: The Tell-Tale Heart meets American Psycho. Kenneth Dahl returns home after four years spent in a psychiatric hospital. Can he distinguish friend from foe, truth from illusion, before he kills again? Inspired by the works of Edgar Allan Poe.

This book is Free on June 10, 2025

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Last Light

Last Light by Michael Agliolo: From the Pyramids of Giza to the inter-sanctum of the Vatican, “Last Light” will bring you to the edge of destruction and the power of enlightenment as a miracle travels across the ages, changing history and the lives of everyone it touches.

This book is Free on June 10, 2025

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Cal Harrison Thriller Series

The Girl on the Boat (Cal Harrison Thrillers Book 1)

The Girl on the Boat (Cal Harrison Thrillers Book 1) by JD Wood: When Sofie learns, after her father’s death, that he was the victim of an illegal drug trial, she is desperate to uncover the truth. But the whistleblowers she meets are murdered and she barely escapes with her life. She’s forced on the run. But someone else is looking for her. The man framed for the murders. Why? Because only Sofie can save him…

This book is Free on June 9, 2025

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Vigilante Justice and Gruesome Killings: Free Mystery eBooks

Just Cause (Hetta Coffey Series Book 14)

Just Cause (Hetta Coffey Series Book 14) by Jinx Schwartz: Hetta Coffey is a sassy Texan with a snazzy yacht, and she’s not afraid to use it. Join Hetta and her friends for another action-packed adventure filled with laughter and the pursuit of vigilante justice.

This book is Free on June 9, 2025

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Deuce Mora Mystery Series Box Set (Books 1-3)

Deuce Mora Mystery Series Box Set (Books 1-3) by Jean Heller: Deuce Mora is a scrappy lead columnist for the Chicago Journal, and normally writes about politics. But, rather than shying away from fights, she tends to pick them. Every once in a while, Deuce’s search for a good story brings her face to face with more trouble than she was really looking for. Enjoy three heart-stopping, hard-boiled mysteries!

This book is Free on June 9, 2025

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The Case of the Pinioned Bosoms (Inspector Cullot Mystery Series Book 2)

The Case of the Pinioned Bosoms (Inspector Cullot Mystery Series Book 2) by Alan Hardy: After staying barely two days at his hotel in the Swiss Alps, Inspector Cullot senses that murder is in the air. He knows there is only one man who can prevent there being a bloodbath… That man is Inspector Cullot himself. Once again, Cullot’s elite Murder Squad is in a race against time to halt a series of vicious, horrific, gruesome killings.

This book is Free on June 9, 2025

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Murder at the Car Wash (Jack Nolan Detective Mysteries Book 3)

Murder at the Car Wash (Jack Nolan Detective Mysteries Book 3) by R Shannon: There’s been a murder at the Big Splash Car Wash. Was Manuel Sanchez murdered for the insurance monies or for the big bag of cash in his trunk? Or was this just another drug-related crime in their town? Fingers are pointing at everyone — and then the mistress showed up. Can Jack & Fiona solve the crime in spite of what’s going on personally between them?

This book is Free on June 9, 2025

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Neural

Neural by Adam Coburn: What if your mind wasn’t your own? When Alex’s girlfriend returns from a mysterious facility changed, he uncovers a conspiracy rewiring Charleston through neural implants. As control spreads, Alex must fight for humanity to stay human in a world being overwritten. A gripping techno-thriller.

This book is Free on June 9, 2025

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Isolation Island: Into the Wild

Isolation Island: Into the Wild by Johnny Moscato: The production crew of the reality survival show Isolation Island gets more than they bargain for when they get stranded on the island along with the contestants… and whatever is killing them.

This book is Free on June 9, 2025

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Attack of the Food Zombies

Attack of the Food Zombies by Dennis Meredith: Rogue scientist Edwin Kane invents a chemical gustatene that renders any food addictive! Hunting him for his formula are drug dealers, food industrialists, and vegan terrorists. But if unleashed, gustatene would spawn hordes of ravenous food zombies! Can a relentless FBI agent, an eccentric FDA scientist, and a world-renowned chef avert disaster?

This book is Free on June 9, 2025

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The Wicked Will Perish Thriller Series

SAS: Body Count (The Wicked Will Perish Book 1)

SAS: Body Count (The Wicked Will Perish Book 1) by Anthony Vincent Bruno: If your child was abused and murdered by career criminals who walked free from court – would you seek revenge? The best method would be to seek the help of professionals – former Special Forces.

This book is Free on June 8, 2025

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Webs of Betrayal and Secret Skeletons: Free Mystery eBooks

Murder à la Mode (The Maggie Newberry Mystery Series Book 16)

Murder à la Mode (The Maggie Newberry Mystery Series Book 16) by Susan Kiernan-Lewis: When a contestant in a cooking contest ends up stabbed to death, the suspect is Maggie’s close friend. Maggie confronts the damning evidence to help her friend—without putting herself or Laurent in the hot seat as well.

This book is Free on June 8, 2025

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Raven's Legacy

Raven’s Legacy by Charlotte Stuart: Tlingit artifacts. A wounded bear. And a skeleton with a secret. In 1980, priceless Tlingit artifacts, including a massive Raven House screen, are stolen from a native Alaskan village. Jonah St. Clair, Koloshan’s only police officer, is thrust into a dangerous web of betrayal and greed as he hunts for the thieves.

This book is Free on June 8, 2025

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The Things We Said Today (Bennett Sisters Mysteries Book 4)

The Things We Said Today (Bennett Sisters Mysteries Book 4) by Lise McClendon: Wedding bells sound in the Scottish countryside as the Bennett sisters travel across the pond to celebrate a very special occasion… A week littered with an unexpected torrential rainstorm, a recalcitrant housekeeper, a reluctant bride, an anxious groom, and too many hangers-on to count. Among the mysteries– will the wedding take place at all!?

This book is Free on June 8, 2025

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Vengeance

Vengeance by Patrick Knight: David McGuire has lost everyone he cares about, and it’s tearing him apart. With the killers locked away, he creates an alter ego, The Reaper, which allows him to channel his thirst for vengeance until they are released. While The Reaper gains cult hero status, David has to fight to regain his soul in an ending you won’t see coming.

This book is Free on June 8, 2025

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Where the Grid Ends

Where the Grid Ends by Robert J. Walker: When an EMP wipes out power across the nation, the world descends into darkness. In a city teetering on the edge of collapse, Dr. Annabelle Wheeler struggles to survive in a psychiatric hospital overrun by its violent inmates. Far away, three young women—Hazel, Lucy, and Katherine—are trapped in a burning high-rise and captured by a ruthless gangster. 

This book is Free on June 8, 2025

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Unknown Transmissions and Serial Killers: Free Mystery eBooks

The Karma Sequence (The Karma Kantata Book 1)

The Karma Sequence (The Karma Kantata Book 1) by A. O. Wagner: With intriguing characters and Faustian temptations, The Karma Kantata series blends suspense with societal, technological, and spiritual dimensions. Follow Dan from a physical and mental low to a state of balance—and a quest to understand the hidden dynamics of the world and its supernatural mechanics. Get all 3 books free today!

This book is Free on June 7, 2025

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Benevolent Evil (A Kendall O'Dell Mystery Book 6)

Benevolent Evil (A Kendall O’Dell Mystery Book 6) by Sylvia Nobel: Creepy!! A dark and horrific secret awaits feisty reporter Kendall O’Dell as she investigates the odd disappearance of several local women. Human trafficking perhaps? A chilling surprise awaits as strange happenings from the past emerge. The results catapult her on a dangerous journey with terrifying results that will leave you stunned.

This book is Free on June 7, 2025

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Shanghai Signal: The Cabal's Code for Global Chaos

Shanghai Signal: The Cabal’s Code for Global Chaos by Owen Parr: A gripping geopolitical thriller from award-winning author Owen Parr. A mysterious transmission. A global power shift. One operative standing between order and anarchy. What first appears to be a rogue cyber incident is actually the first move in a coordinated assault on the global financial and political system. Designed to sow chaos and fracture alliances, the operation aims to pit superpowers.

This book is Free on June 7, 2025

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You Did This (Claire Wolfe Thrillers Book 1)

You Did This (Claire Wolfe Thrillers Book 1) by Jamie Millen: “A consistently exciting debut” (Kirkus Reviews): Only Claire sees the sinister nature behind the sweet face of her sister, Tina. But Tina is brutally murdered at 14, and 12 years later, as more teenage girls turn up dead, investigators consider the possibility of a serial killer — leaving Claire, now a detective, at the top of their suspect list…

This book is Free on June 7, 2025

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To Die For

To Die For by Ray Ronan: “Truly scary.” – Glenn Meade “Ronan is a name to contend with.” – Marc Eliot In a future where organs are currency, Agent Lynn Clarke is hunted for her rare blood. Betrayed and on the run, she must take on a billion-dollar biotech empire. To Die For is a razor-sharp thriller. She doesn’t break—she bites back.

This book is Free on June 7, 2025

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Murdered Performers and Family Secrets: Free Mystery eBooks

Murder at the Stage Door (Sadie Brown Murder Mysteries Book 3)

Murder at the Stage Door (Sadie Brown Murder Mysteries Book 3) by P. Austin Heaton: In 1900, a famous vaudevillian promoter died in a theater fire. The police ruled his death an accident. But 20 years later, a retired magician is receiving threats – threats that falsely accuse him as a killer. Newspaper reporter Sadie Brown steps in to help a friend & uncover the true murderer during a stormy-night reunion of retired performers.

This book is Free on June 6, 2025

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Humph's War

Humph’s War by Wayne Clark: When the U.S. enters WWII, Humph desperately wants to serve his country. His frustration grows as he gets turned down by the army and even the FBI. He finally accepts that his battleground is on American soil where he begins exposing Nazi sympathizers. After a pro-Nazi art forger of international repute is tracked down, he finally gets his chance.

This book is Free on June 6, 2025

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The Cookie Lady Conundrum

The Cookie Lady Conundrum by Nick Vulich: It started with stale cookies and a dead neighbor—now there’s a demon haunting me, ghosts popping out of my TV, a witch telling me what to do, and if I don’t solve this magical murder soon, I’m next.

This book is Free on June 6, 2025

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Raff's Justice

Raff’s Justice by Nick Webster: For cat loving FBI agent Gerald Raff, a routine arson investigation turns deadly. In seemingly unrelated cases, he uncovers a web of deceit, inside and outside the office. Nothing is clear-cut. Answers are partial, and justice a matter of perspective. Time’s running out. As Raff pursues the killer, he must choose order, justice, or Raff’s justice.

This book is Free on June 6, 2025

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The Last Desperado

The Last Desperado by Lee R. Brand: Book cover inspired by Peaky Blinders, drawn by the author himself! In The Last Desperado, a dying man’s shocking confession pulls his grandson into a world of crime, betrayal, and outlaws tied to Bonnie and Clyde. A mystery of family secrets and a past that won’t stay buried! Buy paperback (Special Edition) for a Peaky Blinders peak a boo!

This book is Free on June 6, 2025

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Tales of the South China Sea (Modern Pirate Series Book 1)

Tales of the South China Sea (Modern Pirate Series Book 1) by Fred Baker: First collection of short stories about Alex the Pirate and his savvy crew of rogues and thieves, smugglers working to make a living in the tough and dangerous sea going trades. Collection 2 follows modern pirates who love fast boats and expensive yachts. Each story reveals more about the pirate, his crew, their adventures, and secret missions.

This book is Free on June 6, 2025

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Havana's Dice Roll

Havana’s Dice Roll by Owen Parr: Havana’s Dice Roll is a razor-sharp political thriller that fuses financial corruption, international espionage, and shadow diplomacy into a pulse-pounding narrative of power, betrayal, and the high cost of uncovering the truth.

This book is Free on June 6, 2025

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Inhuman Acts (A Letty Duquesne Thriller Book 1)

Inhuman Acts (A Letty Duquesne Thriller Book 1) by Brooke L. French: Something in nature has gone very wrong. When inexplicable human rabies cases appear in Tennessee, disease ecologist Letty Duquesne jumps at the chance to trace the virus back to its source. But the closer Letty gets to finding the outbreak’s origin, the further someone will go to stop her.

This book is Free on June 6, 2025

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The Grafton Heist (The Levelers Book 1)

The Grafton Heist (The Levelers Book 1) by Stephanie Andrews: A fast-paced, twisty heist gem for readers who like a smart plot and lots of action. John and Abby Adams rob from the rich and give to the poor. The Grafton Heist, their biggest scheme yet, will reallocate over 50 million dollars. But only if they can put together the right crew, and trust each other enough to get the job done.

This book is Free on June 6, 2025

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