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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 1–36

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Angkor Away cover

Mystery, Thriller & Suspense · Detective & Crime Fiction

Angkor Away

The Angkor Series · Book 1

Steven W. Palmer

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Blood Sister cover

Mystery, Thriller & Suspense · Detective & Crime Fiction

Blood Sister

Annie Hansen Mysteries · Book 1

Kenna McKinnon

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Burned Up cover

Mystery, Thriller & Suspense · Espionage & Action Thrillers

Burned Up

Ryan Chaise · Book 1

Stuart G. Yates

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City Of Sin cover

Mystery, Thriller & Suspense · Detective & Crime Fiction

City Of Sin

Carter Thompson Mysteries · Book 1

Sean O'Leary

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Made A Killing cover

Mystery, Thriller & Suspense · Detective & Crime Fiction

Made A Killing

Alex Warren Murder Mysteries · Book 1

Zach Abrams

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Magnolia Tree cover

Mystery, Thriller & Suspense · Detective & Crime Fiction

Magnolia Tree

The Crossing Trilogy · Book 1

June V. Bourgo

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Mastermind cover

Mystery, Thriller & Suspense · Detective & Crime Fiction

Mastermind

Mitchell Parker Crime Thrillers · Book 1

Helen Goltz

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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.