Thriller

Survival Battles, Buried Secrets, and Chilling Investigations: Free Mystery / Thriller eBooks

Murder by the Lighthouse (A Paisley Penrose Cozy Mystery)

Murder by the Lighthouse (A Paisley Penrose Cozy Mystery) FREE by Cheryl Marlow: A stage collapses during a lighthouse fundraiser, killing the town's least popular businessman. When evidence points to murder, innkeeper Paisley Penrose, her Labradoodle Noodle, Detective Grant Halloway, and the quirky Shoreline Circle must uncover the truth before the killer turns their attention to Paisley.

This book is Free on June 16, 2026

1st Shock (Schock Sisters Mystery Series)

1st Shock (Schock Sisters Mystery Series) FREE by Misty Evans and Adrienne Giordano: Elite forensic sculptor Meg Schock is obsessed with solving cold cases and bringing justice to victims. When the local US attorney brings her the skull of a young murdered woman with similarities to one she’s already reconstructed—but not identified—she and her sister, Charlie, dive headfirst into a chilling investigation.

This book is Free on June 16, 2026

Generations

Generations FREE by Noam Josephides: GENERATIONS is a thought-provoking #1 Bestseller set on a multi-generational ship. A secret buried for generations. A conspiracy threatening humanity’s future. And one woman who must risk everything to uncover the truth. "An epic science fiction noir!" - Publisher Weekly “Extraordinary… enthralling journey” - Kirkus Reviews

This book is Free on June 16, 2026

Through a Dark Duet (Books 1-2)

Through a Dark Duet (Books 1-2) FREE by Tamara Rose Blodgett: 🌍 2 books - FREE today! THE BOOK OF ELI meets EDGE of COLLAPSE in this gritty EMP thriller box set by NYT bestseller Tamara Rose Blodgett. Three groups fight for survival in a brutal post-apocalyptic world🌪️ Scarce resources💧desperate alliances 🤝 + hidden truths collide. Download NOW before it's too late!💥#PostApocalyptic #Dystopian #Thriller

This book is Free on June 16, 2026

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Poisoned Cupcakes, Vanishing Suspects, and Forgotten Nights: Free Mystery / Thriller eBooks

Murder, Mystery, and Muffins (A Hazel Winslow Cozy Murder Mystery Book 2)

Murder, Mystery, and Muffins (A Hazel Winslow Cozy Murder Mystery Book 2) FREE by A.P. Wells: The poisoned cupcakes came out of nowhere. Now, Hazel Winslow’s best friend is framed for murder. With Hazel’s trusty “investigator-doodle” puppy, Watson, they’re on the case to sniff out the real killer. But the killer is willing to kill again to stay hidden. Nobody is safe. Not even a puppy.

This book is Free on June 15, 2026

The Mermaid Murders

The Mermaid Murders FREE by Chett Doubret: In fog-shrouded Neoluminae City, cyborg food-truck owner Cyberon McGafferty investigates a string of murdered mermaids. What begins as a grisly mystery soon uncovers hidden conspiracies, forbidden experiments, and an ancient terror rising from the deep. If Cyberon fails, Neoluminae City will drown.

This book is Free on June 15, 2026

Do Nothing (The Griffin Knight Series Book 1)

Do Nothing (The Griffin Knight Series Book 1) FREE by Miguel Angel Hernandez Jr.: Award‑winning author of gritty, high‑octane mystery thrillers. A killer stalks New York City, and Detective Griffin Knight is the only one who sees the pattern. As bodies surface and the city turns a blind eye, Knight races to stop a predator hiding in plain sight. In a world of silence and fear, doing nothing is the most dangerous choice.

This book is Free on June 15, 2026

Just One Yesterday (Trespassing Book 12)

Just One Yesterday (Trespassing Book 12) FREE by P.W. Creighton: When Logan wakes up in a compromising position with two half-naked girls, he knows that something is wrong. Everyone assumes it was just a wild night of partying that got out of hand. But Logan was missing for two days and knows something terrible happened. The problem is that he has no memory of what occurred before or after he went missing.

This book is Free on June 15, 2026

The Empty Chair

The Empty Chair FREE by Christos Vlassis: A guarded van arrives at the courthouse—completely empty. A corrupt politician has vanished. As defense attorney Sofia Daniil fights a system of state secrets and corrupted logs, she uncovers a dark family legacy. A gripping psychological thriller where the courtroom’s empty chair holds a deadly truth. Can she expose the conspiracy?

This book is Free on June 15, 2026

Unbidden Peril (The Peril Files Book 1)

Unbidden Peril (The Peril Files Book 1) FREE by Bradley S Moore: The truth doesn’t set you free—it makes you a target. Dr. Russell Hendricks built something that mattered. Now a U.S. senator is mining federal grant data to seize the country’s most promising science—and Russell’s work is the prize. Forced to run and fight, he learns some secrets don’t just end careers. They cost lives.

This book is Free on June 15, 2026

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The French Deception Thriller Series

A Forgery in Paris (French Deception Book 1)

A Forgery in Paris (French Deception Book 1) FREE by Janice Nagourney: When a school chum is mugged in the metro, American Translator Alex Thornhill teams up with charming FBI agent Eugene Spector and goes undercover in the French underworld, working for criminal mastermind Jacques Mornnais-- only to find herself in the crosshairs of Jacques’ dangerous underling. Debut of the classy, twisty French Deception series!

This book is Free on June 14, 2026

Other Books in the series

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Hostage Deadlines, Hidden Pasts, and Shadowy Plots: Free Mystery / Thriller eBooks

The Silver Gun (A Lane Sanders Mystery Book 1)

The Silver Gun (A Lane Sanders Mystery Book 1) FREE by L.A. Chandlar: In 1930s New York, mayor’s aide Lane Sanders battles corruption, gangsters, and ghosts from her past. When a murder weapon resurfaces—a gun tied to her childhood—she’s thrust into a deadly game of secrets and power. The Silver Gun is a glittering Jazz Age mystery of courage, danger, and redemption.

This book is Free on June 14, 2026

EMP Final Warning

EMP Final Warning FREE by Colton Lively: One second, Beth Green is saving lives. The next, the world flatlines. A strange surge wipes out the grid and turns her hospital into a war zone. Her husband and daughter are miles away, unreachable and alone. To get back to them, Beth will have to cross a city that’s learning how fast civilization can die.

This book is Free on June 14, 2026

Seven Days From Sunday (An MP-5 CIA Thriller Series Book 1)

Seven Days From Sunday (An MP-5 CIA Thriller Series Book 1) FREE by M.H. Sargent: Set during the Iraq War, this fast-paced thriller follows a ruthless terrorist who vows to execute an American hostage and launch a deadly attack in seven days. As a CIA team races to stop him, an Iraqi pharmacist infiltrates the cell to find his kidnapped fiancée—and learns she may be the key to the coming attack.

This book is Free on June 14, 2026

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Runaway Conspiracies, Devious Schemes, and Haunted Pasts: Free Mystery / Thriller eBooks

A Grave Roast (Orchard Hollow Book 1)

A Grave Roast (Orchard Hollow Book 1) FREE by A.N. Sage: Piper Addison has three problems: a broken espresso machine, malfunctioning magic, and a dead body. Guess which one she doesn’t see coming? 'A Grave Roast' is a paranormal cozy mystery complete with an unlucky witch, a ghost familiar, and a feisty raccoon with a talent for getting into sticky situations.

This book is Free on June 13, 2026

Welcome Home to Murder (Molly McGuire Mysteries Book 1)

Welcome Home to Murder (Molly McGuire Mysteries Book 1) FREE by Cindy Kline: Molly McGuire returns to Ireland when her marriage in the United States ends, looking forward to reconnecting with her family. When her childhood nemesis ends up dead and her brother the prime suspect, Molly goes to work on finding the real killer! Start the adventure with Book One. Ten books of Irish mystery, mayhem, and a bit of magic!

This book is Free on June 13, 2026

Turtle Cove

Turtle Cove FREE by Marc Landau: Florida heat doesn't just make you sweat; it makes you crazy. Nolan Parker’s version of paradise is simple—a quiet beach, a loyal pup, and a turtle to paint. But "simple" doesn't pay for kibble, and inflation has him one missed paycheck away from a cardboard box with a view. When a gig to find a runaway teenager leads him into the heart of the Everglades, his quiet life goes up in swamp gas...

This book is Free on June 13, 2026

Other People's Money (The Madeline Dawkins Mystery Series Book 9)

Other People's Money (The Madeline Dawkins Mystery Series Book 9) FREE by Cynthia Hamilton: While Madeline and her team search for a missing bookkeeper, while vetting a possible gold-digger, startling connections begin to appear, adding to the complexity of what they’re dealing with. The MDPI team is pulled in several different directions as they try to track down grifters who find the lure of other people’s money too hard to resist.

This book is Free on June 13, 2026

The Future Ones (Althea Johnson Series Book 2)

The Future Ones (Althea Johnson Series Book 2) FREE by S. A. Asthana: Police Lieutenant Althea Johnson understands that a case is truly closed only when there are no unanswered questions left. That’s the foundation of policing aboard the Starshot, a spaceship deep into its millennia-long journey to Proxima Centauri b. But a new act of violence forces her to confront how much was left unresolved beneath her last case.

This book is Free on June 13, 2026

Deuce Mora Mystery Series (The Deuce Mora Series Book 7)

Deuce Mora Mystery Series (The Deuce Mora Series Book 7) FREE by Jean Heller: Fiery, tough, athletic, and a dirty fighter when she has to be, journalist Deuce Mora tends to lean more heavily on her "investigative reporter" profile than her “lead columnist” title strictly requires. Rather than shying away from fights, she tends to pick them.

This book is Free on June 13, 2026

Oceans of Trouble (Tyler's Trouble Trilogy Book 2)

Oceans of Trouble (Tyler's Trouble Trilogy Book 2) FREE by Travis Casey: Fast, foul-mouthed, and laugh-out-loud ridiculous, this is a sea story for anyone who’s ever tried to escape their problems… only to discover they stowed away in your seabag. Come aboard—just don’t volunteer to “blow the EOOW.”

This book is Free on June 13, 2026

Veritas

Veritas FREE by Livia Huntingdon-Jones: Will the truth set you free?

This book is Free on June 13, 2026

Out of Control

Out of Control FREE by Linda Riedle: Forensic pathologist Lily Markham's life is turned upside down when her father's body shows up on her autopsy table, thirty years after she believed him dead. With reason to think that the killers want her dead also, she is in a race to find answers—a search that will lead her to a shocking conspiracy at the highest levels of government.

This book is Free on June 13, 2026

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Restless Spirits, Hidden Betrayals, and Dangerous Truths: Free Mystery / Thriller eBooks

The Heart’s Choice (Cotton Cops Mysteries Book 1)

The Heart’s Choice (Cotton Cops Mysteries Book 1) FREE by Anna Markland: Uprooted to a crumbling estate in industrial Lancashire, Beatrice Parker never expected to fall for a ruthless mill owner. But when murder strikes his mill and scandal threatens them both, Bea and Roger must risk everything—because love born in danger may not survive the truth.

This book is Free on June 12, 2026

Murder Most Foul (A Jack Dunn & Martha Healey Mystery Book 4)

Murder Most Foul (A Jack Dunn & Martha Healey Mystery Book 4) FREE by Maggie McChristie: In the close-knit town of Oak Hill, secrets are hard to keep. A series of troubling incidents at a local private academy draws Jack Dunn and Martha Healey into a maze of betrayal and hidden pasts. When nothing is as it seems, learning the truth can be murder.

This book is Free on June 12, 2026

Shadow of the Sunstone (Sierra Byrd's Airborne Archaeological Adventures Book 1)

Shadow of the Sunstone (Sierra Byrd's Airborne Archaeological Adventures Book 1) FREE by Luke Richardson and John Hopton: Sierra Byrd swapped the flight deck for solitude. Then an archaeologist arrived with an ancient relic—and a sinister plot to poison humanity. Now she's back in the cockpit, racing against time and a megalomaniac seeking immortality. Ancient mysteries. High-stakes dogfights. Zero profanity. Shadow of the Sunstone—Indiana Jones meets Top Gun.

This book is Free on June 12, 2026

Innocent Monsters (The Orphic Assassin Trilogy Book 3)

Innocent Monsters (The Orphic Assassin Trilogy Book 3) FREE by Sam Luna: Damien Attica is the anti-hero to end all anti-heroes--from ancient Greece to 1992 Albuquerque to modern-day Los Angeles... a restless spirit reincarnates across the millennia to dispense brutal justice. The thrilling conclusion of the reader-acclaimed Orphic Assassin Trilogy.

This book is Free on June 12, 2026

She Emerged

She Emerged FREE by Alex Ruby: A disgraced detective. A wrongful arrest. A killer no one sees coming. When Amber Jones is pulled back into a D.C. murder investigation, she uncovers a web of corruption connecting dirty cops, Russian mobsters, judges, and old friends. The truth will shatter everything. Because the killer is a woman who emerged into the darkness long ago.

This book is Free on June 12, 2026

Double Exposure (The Exposure Series Book 2)

Double Exposure (The Exposure Series Book 2) FREE by Kirk Voclain: A photographer with a spy’s eye. A traitor inside the agency. A mission designed to make him the perfect fall guy. When Reed Sawyer captures the wrong secret, every shot could be his last. 'Double Exposure' is a high-tension espionage thriller loaded with betrayal, conspiracy, and danger in every frame.

This book is Free on June 12, 2026

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Hidden Wallets, Clever Heists, and Shrouded Pasts: Free Mystery / Thriller eBooks

Murder Along the Garden Trail (An Unputdownable Lila Jennings Cozy Mystery Book 5)

Murder Along the Garden Trail (An Unputdownable Lila Jennings Cozy Mystery Book 5) FREE by Diane Scotland: The Maplewood Garden Trail was meant to be a celebration of beauty, community, and carefully curated perfection. Until the event’s star horticulturist is found dead inside a locked greenhouse. Now, florist Lila Jennings must untangle a mystery rooted in secrets, sabotage, and a killer who knows how to make danger look like an accident.

This book is Free on June 11, 2026

On Silent Lake: A Marley Madison Short Mystery

On Silent Lake: A Marley Madison Short Mystery FREE by C. S. Nelson: A grieving former detective. A silent Oregon lake. A body that changes everything. When Marley Madison retreats to a small town for a fresh start, she’s pulled into a mystery tied to old secrets, missing people, and a past someone will do anything to protect. Book 1 in the Marley Madison Short Mysteries.

This book is Free on June 11, 2026

Cinnamon and the Clue in the Cardamom (The Catmint Chronicles Book 1)

Cinnamon and the Clue in the Cardamom (The Catmint Chronicles Book 1) FREE by Amanda Sterczyk: Escape into a paranormal mystery filled with magic and humor. Meet the residents of Cresswell-on-Wyrd and discover a world where secrets are hidden in every corner. The Catmint Chronicles is a no-murder cozy series perfect for readers who love witty dialogue, charming settings, and a dash of the supernatural. And a talking cat.

This book is Free on June 11, 2026

Under a Raging Moon (River City Book 1)

Under a Raging Moon (River City Book 1) FREE by Frank Zafiro: A serial robber who is getting more and more violent and a group of patrol officers scramble to stop him... before it is too late. Features an ensemble cast of police officers. Written by a real cop with real experience, this book is like a paperback ride-along.

This book is Free on June 11, 2026

The Gray Zone

The Gray Zone FREE by Daphna Edwards Ziman: Blind justice masked the truth … Fleeing an abusive foster home, Kelly Jensen transforms into an elusive, daring, and seductive criminal who will do anything to protect those she loves. She’s become a master of disguise and voice to save herself and her children from the powerful and sadistic man who killed her mother. And is now stalking her.

This book is Free on June 11, 2026

Posse of Thieves (The Tinman Series Book 1)

Posse of Thieves (The Tinman Series Book 1) FREE by Marc J. Reilly: Thirty-five years ago, the heist went off without a hitch, but all Peach and Tinman got were a few old baskets. Too bad they didn’t know they were worth a million bucks each, or they wouldn’t have given them away. What’s a crook to do? What else. Steal them back again. For action, madcap adventure, and daring heists, don’t miss this comedic gem.

This book is Free on June 11, 2026

Little Girl Taken

Little Girl Taken FREE by Hazel Holmes: She's spent her career finding other people's children. Now someone has taken hers. For twenty years, children have vanished in seconds. Detective Mia Anderson got closer than any cop ever has, and that was her mistake. This kidnapper doesn't run; she retaliates. Now Mia has three days, no backup, and one choice: follow the rules, or go alone into the dark to save her daughter.

This book is Free on June 11, 2026

Red 21: A Double Down Conspiracy

Red 21: A Double Down Conspiracy FREE by Ashen Gray: Ex-cop turned P.I. No client. $10,000 in cash and a note telling him to bet it all on Red 21. Finn O'Connor never asks questions. Until now. One spin of the roulette wheel pulls him into a conspiracy with no visible bottom — and introduces him to a woman he can't quite read. And an enemy he can't even name. Nothing is left to chance.

This book is Free on June 11, 2026

The Legacy of Silence

The Legacy of Silence FREE by Christos Vlassis: Some doors open to let you in, but others to never let you out. A homeless 20-year-old finds a billionaire’s wallet. Returning it should have been the end. Instead, Nikitas is pulled into a dark corporate world. Dive into The Legacy of Silence, a gripping psychological suspense about the cost of belonging.

This book is Free on June 11, 2026

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The Guilty Pleasures Editions Thriller Series

Campus Call Boy (Guilty Pleasures Editions Book 1)

Campus Call Boy (Guilty Pleasures Editions Book 1) FREE by Romeo Preminger: When Noah Jeffries gets hired by an obsessive client, he finds out that working as a high end escort to pay for college could be murder. The first book in Romeo Preminger's branded domestic thriller series, Guilty Pleasures Editions.

This book is Free on June 10, 2026

Other Books in the series

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Brutal Empires, Poisonous Relics, and Mountain Secrets: Free Mystery / Thriller eBooks

Run the River Road

Run the River Road FREE by Jenny Marie Bee: When a beloved mountain mechanic crashes his old Ford into a light pole, newly sworn Sheriff Bobby Holbert must uncover whether his father's death was suicide, accident, or sabotage before a vengeful deputy, a greedy ring of runners, and family secrets tear his home and his brother’s future apart.

This book is Free on June 10, 2026

Sacrificial Child

Sacrificial Child FREE by Edmantha Hall: Linda Harrison escaped a childhood of abuse to become a respected oncologist, but a brutal murder, hidden cocaine, and a shocking family secret pull her into a deadly criminal empire led by the grandfather she never knew existed.

This book is Free on June 10, 2026

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Deadly Secrets, Vanishing Evidence, and Shifting Identities: Free Mystery / Thriller eBooks

Fable Wood Witches (Fable Wood Witches Cozy Mystery Book 1)

Fable Wood Witches (Fable Wood Witches Cozy Mystery Book 1) FREE by RaShelle Workman: Cinderella’s descendant was meant for happily ever after. Instead, artifact witch Gardenia Crescent gets magical murder, a cursed amulet, and a fairy tale bleeding into reality. With dragons rising and danger closing in, she must solve the mystery before Fable Wood becomes a deadly legend.

This book is Free on June 9, 2026

Murder, Hijinks, and the Peridot Cufflinks (An Order Out of Chaos Mystery Book 2)

Murder, Hijinks, and the Peridot Cufflinks (An Order Out of Chaos Mystery Book 2) FREE by Lynn Rankin-Esquer: When organizer Izzy Bishop touches a pair of peridot cufflinks, she sees a chilling vision: a knife in someone's back. Days later, the murder becomes real. Now Izzy must sort through a mess of secrets, suspects, and deception while convincing the police she's not part of the problem.

This book is Free on June 9, 2026

The Long Way Home (A Samantha Church Mystery Book 6)

The Long Way Home (A Samantha Church Mystery Book 6) FREE by Betta Ferrendelli: Reporter Samantha Church travels to the border town of El Paso, Texas, seeking her deceased friend's sister Jenny, fulfilling his final wish while uncovering dangerous secrets and developing unexpected feelings for her boss Wilson Cole Jr.

This book is Free on June 9, 2026

Flawed Innocence (A Shana Doyle Mystery Book 3)

Flawed Innocence (A Shana Doyle Mystery Book 3) FREE by Karen Redman: Detective Shana Doyle’s Christmas Eve turns deadly when her mentor finds his wife—missing for seven years—murdered in his living room. Now he's the prime suspect. As Shana uncovers buried secrets, she realizes the killer will do anything to keep the past hidden—even kill again.

This book is Free on June 9, 2026

The Hidden Face of God

The Hidden Face of God FREE by R.A. Williams: In 2038, a rogue AI wipes the internet of the Shroud of Turin and evidence of Christ’s resurrection. When cybersecurity expert David Bishop fights back, the attacks turn deadly—targeting him and the woman he loves. Soon, he discovers the assault on faith is just the opening move in a covert war for global domination.

This book is Free on June 9, 2026

Roopere

Roopere FREE by Robert Sefer: A mysterious man performs an impossible trick on a talent show. The world is divided: fraud... master illusionist... or something more than human?

This book is Free on June 9, 2026

Paranopia

Paranopia FREE by Mark B. Dawkins: Seven top performers arrive on a private island expecting luxury—and a shot at promotion. But when their host is attacked and disappears, they’re cut off with no way out. As paranoia grows and trust breaks down, the pressure turns deadly—and not every outcome is an accident.

This book is Free on June 9, 2026

Where the Bad Men Sleep (The Matthews Files Book 1)

Where the Bad Men Sleep (The Matthews Files Book 1) FREE by Rowan Merrick: Former detective Ray Matthews loses hours, sometimes days. When the men he once exposed start turning up murdered across Houston, his own words carved into their skin, every clue points back to him. As the bodies pile up, Ray must face a terrifying question: what if the killer has been wearing his face all along?

This book is Free on June 9, 2026

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