4 Free Ebooks to Read in August 2026 for Mystery, Thriller, and Crime Fans

Solve crimes with these mystery ebooks—free, this month only.

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camera-iconPhoto Credit: Martin Vorel

Those of us who are voracious readers can never get our fill. There is always some intriguing new mystery or riveting new thriller to devour, and an endless stream of new releases to add to our reading wish lists.

But sometimes you just crave a classic. These are the books that created the scaffolding for the genres we know and love—and they are just darn good.

Every month, we’re bringing you a selection of free ebooks to read that are perfect for all you timeless sleuths out there—lovers of all things mysterious and thrilling.

Call Mr. Fortune

Call Mr. Fortune

By H. C. Bailey

Dr. Reginald Fortune is a bright, intellectual, and observational doctor, called to attend to Archduke Maurice, after being struck by a motor vehicle. 

When Dr. Fortune arrives, the body of a second man lies near the scene of the accident, proving the case to be more complex than it seems. He must delve into the case, the relationships around the Archduke, and the possible motives behind the mysterious accident before it's too late.

32 Caliber

32 Caliber

By Donald McGibeny

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When Warren Thompson learns that his wife has left him for another man, he is left to deal with the comedown and chaos of the split. Between drama, heartbreak, and secrets, Warren’s wife’s actions will have much more of an effect than anyone imagined. 

The Thinking Machine

The Thinking Machine

By Jacques Futrelle

A brilliant detective is able to solve mysteries that seem completely impossible. Unbelievable crimes, kidnappings, thefts…nothing was too much for him to handle. The stories in The Thinking Machine challenge the reader’s own powers of observation against the investigators, keeping everyone on their toes. 

The Bold Saboteurs

The Bold Saboteurs

By Chandler Brossard

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Yogi, though only young, steals like a man, stopping at nothing to be rich. At home, his “Yogi” persona is paused for George Brown, a young boy with an absent, alcoholic father and brittle mother, left to fend for himself and his brother. 

George’s tactical stealing in Washington D.C’s streets must weave through muggers, extortionists, and prostitutes, leaving him and his occasional schizophrenic hallucinations blurred between sanity and insanity.