4 Free eBooks to Read in August 2025 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.

The Gold Bag

The Gold Bag

By Carolyn Wells

Young detective Herbert Burroughs teams up with his hero, famous sleuth Fleming Stone, to solve the peculiar murder of Joseph Crawford, a millionaire killed in the study of his own New Jersey home.

As Burrough’s begins to fall for Crawford’s beloved niece, a suspect with a clear motive, he’s forced to follow the instincts of the master investigator, even if it means losing the one he loves. 

Arsene Lupin versus Herlock Sholmes

Arsene Lupin versus Herlock Sholmes

By Maurice Leblanc

When master thief Arsène Lupin steals a beautiful desk from a mathematics professor, the professor will stop at nothing to get it back. For Lupin didn’t just take a desk, but the winning lottery ticket worth one million francs within it.

The world famous English detective arrives on the scene, intent on out maneuvering Lupin, but little does he know that the desk is just one part in Lupin’s grand scheme. 

The Gunner

The Gunner

By Edgar Wallace

In this classic crime thriller, jewel thief “Gunner” Haynes, a man with a fierce core and a gentlemanly mask, crosses paths with well-connected banker Luke Maddison outside the Ritz-Carlton one winter night.

Their adventure will take them deep into London’s seedy underworld as they rush to outwit both DI Horace Bird, aka the Sparrow, and a reporter on the case.

No Name

No Name

By Wilkie Collins

Magdalen and Norah Vanstone are left penniless after both of their parents pass away and a legal loophole cuts them out of their father’s will. Instead of going to the sisters, all of the family’s money goes to their uncle, leaving the girls with nothing.

Norah takes a job to try to make them any money, but Magdalen is determined to win back what is rightfully theirs.