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Free Mystery, Thriller & Suspense Books

Find free mystery, thriller, and suspense books. Choose a cozy investigation, a crime story, a historical case, or a thriller from the current catalog selection.

78 free books · showing 37–72

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Pavement cover

Mystery, Thriller & Suspense · Detective & Crime Fiction

Pavement

McGill And Gropper Thrillers · Book 1

Andrew Davie

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River Bones cover

Mystery, Thriller & Suspense · Detective & Crime Fiction

River Bones

Sara Mason Mysteries · Book 1

Mary Deal

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Second Skin cover

Mystery, Thriller & Suspense · Psychological Thrillers

Second Skin

The Maricopa County Shifters · Book 1

Simone Beaudelaire

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Tell Me Why cover

Mystery, Thriller & Suspense · Detective & Crime Fiction

Tell Me Why

Georgie Harvey and John Franklin · Book 1

Sandi Wallace

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About Free Mystery, Thriller & Suspense Books

Free mystery, thriller and suspense books cover everything from puzzling crimes to dangerous pursuits and secrets that threaten to surface. Whether you prefer an amateur sleuth piecing together clues or a protagonist facing high stakes, there are different kinds of tension to discover.

Browse cozy mysteries, detective and crime fiction, psychological thrillers, espionage and action thrillers, and historical mysteries. Many free titles introduce ongoing investigators or series characters, making them useful starting points for a new reading obsession.