Mystery

The Mythical Pet Sitting Cozy Mystery Series

A Mythical Case of Arson (A Mythical Pet Sitting Mystery Book 1)

A Mythical Case of Arson (A Mythical Pet Sitting Mystery Book 1) FREE by Melissa Erin Jackson: All Deandra wants is a quiet weekend with her family in the (hidden) magical town of Axia. Instead, she meets a very cute veterinarian, gets caught up in an arson investigation, and rescues a baby dragon.

This book is Free on May 17, 2026

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The Cutter Kauai Sea Adventures Thriller Series

Dagger Quest (Cutter Kauai Sea Adventures Book 1)

Dagger Quest (Cutter Kauai Sea Adventures Book 1) FREE by Edward Hochsmann: The crew of the U.S. Coast Guard Cutter Kauai thought it was a routine patrol—until a deadly attack exposes a covert operation that could ignite a global nuclear war. To hunt a ruthless enemy at sea, the crew will risk everything in this pulse‑pounding launch of the high‑octane Cutter Kauai Sea Adventures series.

This book is Free on May 17, 2026

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Hidden Treasures, Ethical Dilemmas, and Vanishing Agents: Free Mystery / Thriller eBooks

Rings On Her Fingers (Psychic Seasons Series Book 1)

Rings On Her Fingers (Psychic Seasons Series Book 1) FREE by ReGina Welling: Julie's crumbling estate holds a hidden treasure—if she can find it before her scheming ex forces a sale. Armed with psychic friends and a skeptic's instincts, she's hunting for answers. The only thing more distracting than the mystery? Tyler Kingsley and that impossibly crooked grin.

This book is Free on May 17, 2026

Snow Angel (A Mooselake Maine Cozy Book 1)

Snow Angel (A Mooselake Maine Cozy Book 1) FREE by Cindy Davis: In Owl's Nest Maine, Avery Winston's life is great. As owner of Everything Outdoors, providing skiing, fishing, sleigh rides, etc...she's busy. When, during the annual snowman contest, a face splats to the floor revealing female features, she and bestie Harper become the main suspects. They join forces to shovel up the truth of Caroline's murder.

This book is Free on May 17, 2026

Trolling for Murder (A Vashon Island Mystery Book 2)

Trolling for Murder (A Vashon Island Mystery Book 2) FREE by Charlotte Stuart: Vashon Islander Lavender “Lew” Lewis finds herself racing against the clock to identify a killer, track down two missing teenagers, and stay ahead of a bully who wants payback. When the evidence leads her in a direction her heart doesn’t want to go, she faces a gut-wrenching ethical dilemma.

This book is Free on May 17, 2026

End of Power

End of Power FREE by Clay Wise: When an EMP plunges Ridgecrest Prison into darkness, every lock and safeguard fails. Trapped with five thousand violent inmates and only a handful of allies, Dr. Alexandra Ward must fight to survive the chaos, and decide who can be trusted when survival is all that matters.

This book is Free on May 17, 2026

Irreparable Harm (Sasha McCandless Legal Thriller Book 1)

Irreparable Harm (Sasha McCandless Legal Thriller Book 1) FREE by Melissa F. Miller: A skillfully woven plot, surprising twists, and a quick pace keep readers turning the pages in this gripping legal thriller from a USA Today bestseller. Downloaded by more than one million readers! Sasha McCandless has one goal: Make partner at the best firm in town. Then a plum assignment plunges her into a world of deceit and danger.

This book is Free on May 17, 2026

Crusader (Quinlan Book 6)

Crusader (Quinlan Book 6) FREE by Kevin Quilligan: Why can't we all just be friends? Mossad has sworn to kill him and is about to have a major crack at it, after he's been punished. For Quinlan, the safest place is a battlefield; let them try it on his turf. Gravitating to the Devil's backyard to try and help the people of Gaza, he'll fight for life until it's time to fight for something else.

This book is Free on May 17, 2026

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Courtroom Crossfire, Vanished Years, and Microbe Threats: Free Mystery / Thriller eBooks

The Grelnocks

The Grelnocks FREE by Jonathan Maas and Weston Scott: A police contractor called in to resolve a penthouse standoff. A warning from the man inside that some things are not meant to be perceived by humans. A mystery with a paranormal edge - read The Grelnocks free May 14 - 18, 2026!

This book is Free on May 16, 2026

Red Barn (Ruth Baker Thrillers Book 1)

Red Barn (Ruth Baker Thrillers Book 1) FREE by Sam Baron: 2026 FULLY EXPANDED AND REVISED EDITION. Some secrets refuse to stay buried... Texas Ranger Ruth Baker faces her darkest case yet—one that strikes at the heart of her own family. Red Barn is a high-stakes mystery thriller packed with explosive action, psychological warfare, and the trademark emotional punch Baker & Tate fans have come to love.

This book is Free on May 16, 2026

Confessions of an Accidental Lawyer

Confessions of an Accidental Lawyer FREE by Michael Stockham: Legal Thriller! A young lawyer struggles to ensure that his client, his family, and his integrity all survive. Michael Stockham, a litigation attorney, takes us on a page-turning journey. If you like legal thrillers, you don't want to miss this! American Fiction Award winner. "Exceptionally well-written." - Literary Titan

This book is Free on May 16, 2026

The Ashes of Eden

The Ashes of Eden FREE by Andrew Parker: Daniel Eden wakes in a hospital bed with no memory of the past 8 years. His partner, Ellie, reveals their 5-year-old daughter, Kacey, is missing, believed to have been taken by a notorious serial killer. But as Daniel uncovers the truth about the missing years, the evidence points toward one horrifying possibility: the monster he’s hunting may have been staring back at him in the mirror all along.

This book is Free on May 16, 2026

Defense Mechanisms

Defense Mechanisms FREE by Mo Kramer: At an international medical summit, infectious disease specialist Noah Winter meets Dr. Balodis, a scientist who claims to have created microbes that end aging and cure deadly diseases. But Balodis has a darker plan: redesigning humanity itself. Now Noah must stop a global catastrophe before the cure becomes humanity’s extinction.

This book is Free on May 16, 2026

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Small-Town Disappearances, Gritty Battles, and Apocalyptic Clues: Free Mystery / Thriller eBooks

A Little Bit Witchy (A Riddler's Edge Cozy Mystery Book 1)

A Little Bit Witchy (A Riddler's Edge Cozy Mystery Book 1) FREE by A.A. Albright: Join newspaper reporter Aisling Smith as she moves to the small Irish town of Riddler's Edge - a town filled with magic, mystery, and too many murders. With the help of a handsome but grumpy detective and a host of supernatural friends, she discovers - is she a little bit witchy?

This book is Free on May 15, 2026

Moon Detective: The Jacques Dubois Mysteries (The Outer Earth Mysteries Book 1)

Moon Detective: The Jacques Dubois Mysteries (The Outer Earth Mysteries Book 1) FREE by J.W. Holmes: On Alpha Colony, the premier human settlement on the Moon, follow Detective Jacques Dubois as he and his new partner Cornelia "Corny" Stevenson do their best to keep the colony and its residents safe in these seven cosy adventures filled with action and mystery!

This book is Free on May 15, 2026

Trail Gone Dark (K-9 Search & Rescue Mysteries Book 1)

Trail Gone Dark (K-9 Search & Rescue Mysteries Book 1) FREE by Sophie Lyon: If you love small-town secrets, loyal dogs, and twists you won't see coming, this is your next binge. Gemma thought Elk Creek would be her fresh start. But when she and K-9 partner Kira find a body, they uncover a decades-old disappearance and a killer hiding in plain sight. Book 1 of K-9 Search & Rescue Mysteries!

This book is Free on May 15, 2026

The Doomsday Butcher (Cole Chambers FBI Profiler Thrillers Book 1)

The Doomsday Butcher (Cole Chambers FBI Profiler Thrillers Book 1) FREE by S.E. Stitcher: New York, 1993: Rookie FBI agent Cole Chambers must stop a madman who’s turned an amusement park into a ghastly scene from the Book of Revelation. Can he decode cryptic clues linked to apocalyptic prophecies and stop a serial killer bent on unleashing Armageddon? Dive into a chilling race against time with The Doomsday Butcher.

This book is Free on May 15, 2026

Binding Coil (The Helix Project Book 2)

Binding Coil (The Helix Project Book 2) FREE by J.L. Calder: Mike Green thought he’d built a new life free from covert politics, but when a cartel threatens LA, his new life collides with a mission under McCollister’s command. Between the black ops engineered in Washington and the gang war raging on the gritty streets of Los Angeles, the real battle becomes protecting life from a system designed to erase it.

This book is Free on May 15, 2026

The Immortality Virus

The Immortality Virus FREE by Tom Draycott: Dr. Maya Carter didn't mean to cure death. She just wanted to save a young boy's life.

This book is Free on May 15, 2026

Escape From Batechu Island

Escape From Batechu Island FREE by T.A. Shelano: What are you capable of under pressure? Who can you trust in a battle for survival? In this fast-paced, high-stakes, heart-stopping thriller, we follow a group of unruly teens pushed to the limit by a deadly dystopian conspiracy as they tackle powerful enemies and each other. Can they avoid a terrifying fate? Will they Escape From Batechu Island?

This book is Free on May 15, 2026

Queen of Spades Thrillers Box Set (Books 1-6)

Queen of Spades Thrillers Box Set (Books 1-6) FREE by Kristi Belcamino: Mafia boss Eva's world shattered when rival Sicilian families betrayed her. With a bounty on her head, she fled to America and created a new life. Then they found her. And destroyed everything she loved. Now she has only one thing left to live for: Making them pay.

This book is Free on May 15, 2026

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Snowy Discoveries, Vanishing Roommates, and Shaken Towns: Free Mystery / Thriller eBooks

The Village of Slightly Magical People

The Village of Slightly Magical People FREE by John McDonnell: Ivy Hale, a skeptical London journalist arrives in the quirky village of Whimble-in-the-Vale expecting nonsense—not magic, romance, and a goose with attitude. Filled with cozy romance, whimsical villagers, soft enchantment, and small-town charm, this heartwarming fantasy is perfect for fans of Legends & Lattes.

This book is Free on May 14, 2026

Unwelcome Matt

Unwelcome Matt FREE by Dave Dobson: Amy Galanis' quiet life as a librarian takes a chaotic turn when she comes home to find a dead stranger in her living room and her slob of a housemate, Matt, vanished without a trace. As the police investigate, shadowy figures appear, forcing Amy to confront a dangerous question: What was Matt up to, and why are so many people out to get her now?

This book is Free on May 14, 2026

The Hills Be Shaken

The Hills Be Shaken FREE by Michael Stewart: Mose Haley is just an engineer, but after a dam collapses and devastates a small Kansas town, he is recruited by the FBI to find out what really happened. Critics call it SEVEN meets MACGYVER.

This book is Free on May 14, 2026

The Tenth Trail Mark (The Tenth Series)

The Tenth Trail Mark (The Tenth Series) FREE by Joe Looby: 1945. Italy is a fortress of ice. In the dead of night, Johnnie Grey leads ski troops up an unscalable cliff to break the Gothic Line. One slip means oblivion; one victory could help liberate Italy. Inspired by true events.

This book is Free on May 14, 2026

Parallax: What Happens When Machines Start Betting On War?

Parallax: What Happens When Machines Start Betting On War? FREE by scm7k: What happens when AI agents create a feedback loop between prediction and reality? Five people have five days to answer that question as an autonomous trading system drives markets, moves intelligence, and blurs the line between forecasting a war and causing one. The answer isn't a conspiracy. It's worse.

This book is Free on May 14, 2026

Grayduck

Grayduck FREE by Scott R Welvaert: Grayduck is a gritty, unique, traumatizing, genre-mashup of Goodfellas and Stand By Me that leaves your head spinning, your heart aching, and your hands ready to punch my lights out.

This book is Free on May 14, 2026

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The Estate Sale Cozy Mystery Series

Saltwater Secrets (Estate Sale Mysteries Book 1)

Saltwater Secrets (Estate Sale Mysteries Book 1) FREE by Wanda Fellows: Estate appraiser Callie Vance has walked through hundreds of estates. She knows the difference between clutter and secrets. At Crest Point Manor—a three-story saltbox perched on a bluff above Breaker Cove—the secrets are the kind people drown for.

This book is Free on May 13, 2026

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Kidnapped Daughters, Memory Theft, and Desert Pursuits: Free Mystery / Thriller eBooks

Bribing Saint Anthony (A Mary Catherine Mahoney Mystery Book 1)

Bribing Saint Anthony (A Mary Catherine Mahoney Mystery Book 1) FREE by Rita Moreau: A missing husband. Plot to blow up a national treasure. Fortune-telling aunts. As MC follows the paper trail, a missing person’s case transforms into something even worse. Will her fortune-telling aunts be able to help MC before her old nemesis takes out a national treasure? Solving mysteries is a Greek family affair. Hope you like kooky and fun.

This book is Free on May 13, 2026

Spellbound (Spellbound Book 1)

Spellbound (Spellbound Book 1) FREE by Kathryn James: One botched spell turns Ciderbrooke upside down: every man falls for Eliza—except the one she wants. Between laugh-out-loud chaos, stubborn romance, and a very dark foe, this witch must untangle magic before it ruins everything—including her heart.

This book is Free on May 13, 2026

The Holy Grail Code

The Holy Grail Code FREE by Ehud Peled: When a freak plane crash leaves five people dead without explanation, veteran investigative journalist Ilana Perez jumps on the case. Unknowingly, she dives headfirst into a rabbit hole of deception and conspiracy, going back over two thousand years.

This book is Free on May 13, 2026

Deuce Mora Mystery Series (Vol. 1-3) (The Deuce Mora Series Book 6)

Deuce Mora Mystery Series (Vol. 1-3) (The Deuce Mora Series Book 6) FREE by Jean Heller: Deuce Mora’s one tough cookie–-a female sleuth with a conscience and an attitude–fiery, tough, athletic, a dirty fighter when she has to be. The scrappy lead columnist for the Chicago Journal normally writes about politics, but Deuce’s search for a good story brings her face-to-face with more trouble than she was really looking for.

This book is Free on May 13, 2026

Elena Jones: The Mojave Ghost

Elena Jones: The Mojave Ghost FREE by Ray Colton: She saw too much. Now, analyst Elena Jones is the prey. In a town controlled by powerful men, the truth is a death sentence. Hunted through the scorched Mojave desert by the very people sworn to protect her, Elena must fight to survive. A high-stakes thriller where the hunter becomes the hunted.

This book is Free on May 13, 2026

Bigger Than Brooklyn

Bigger Than Brooklyn FREE by Kris Whelan: Brooklyn, 1972. Bennie Esposito sweeps hair in his father's barbershop, his baseball dreams long dead. When he wins the underground lottery, he thinks his luck has finally turned. But collecting the payout puts him in the crosshairs of a vicious mob enforcer with a long memory, dirty cops working a murder, and a Vietnam vet with dangerous secrets.

This book is Free on May 13, 2026

He Made Me Forget

He Made Me Forget FREE by Laura Voss: Every morning, Daniel makes Claire's coffee. Every morning, she forgets a little more. She thought she was losing her mind. She was wrong. He was taking her memories — one cup at a time. A cold, twisty psychological thriller you won't be able to put down.

This book is Free on May 13, 2026

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The Leashes and Lies Cozy Mystery Series

Agility and Alibis (The Leashes and Lies Mysteries Book 1)

Agility and Alibis (The Leashes and Lies Mysteries Book 1) FREE by Hailey Hartley: When a beloved dog breeder's suspicious death brings her championship border collie Dash nose-to-nose with a killer, Riley Harper can't let it go. In Pinewood Springs, where gossip travels fast and secrets run deep, Riley uncovers embezzlement, professional grudges, and a killer who's noticed her snooping — and isn't happy about it.

This book is Free on May 12, 2026

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