Free Mystery Books to Read Online

Browse 121 free public-domain Mystery books to read online or hear as AI audiobooks on Efil Books — no cost, no account.

• The Red House Mystery by A. A. Milne
• At the Villa Rose by A. E. W. Mason
• Poirot Investigates by Agatha Christie
• The Big Four by Agatha Christie
• The Man in the Brown Suit by Agatha Christie
• The Murder at the Vicarage by Agatha Christie
• The Murder of Roger Ackroyd by Agatha Christie
• The Murder on the Links by Agatha Christie
• The Mysterious Affair at Styles by Agatha Christie
• The Mystery of the Blue Train by Agatha Christie
• The Secret Adversary by Agatha Christie
• The Secret of Chimneys by Agatha Christie
• The Seven Dials Mystery by Agatha Christie
• The Jade God by Alan Sullivan
• Ralestone Luck by Andre Norton
• A Strange Disappearance by Anna Katharine Green
• That Affair Next Door by Anna Katharine Green
• The Leavenworth Case by Anna Katharine Green
• The Poisoned Chocolates Case by Anthony Berkeley
• A Study in Scarlet by Arthur Conan Doyle
• His Last Bow by Arthur Conan Doyle
• The Adventures of Sherlock Holmes by Arthur Conan Doyle
• The Casebook of Sherlock Holmes by Arthur Conan Doyle
• The Hound of the Baskervilles by Arthur Conan Doyle
• The Memoirs of Sherlock Holmes by Arthur Conan Doyle
• The Return of Sherlock Holmes by Arthur Conan Doyle
• The Sign of the Four by Arthur Conan Doyle
• The Valley of Fear by Arthur Conan Doyle
• The Bungalow Mystery by Carolyn Keene
• The Hidden Staircase by Carolyn Keene
• The Mystery at Lilac Inn by Carolyn Keene
• The Secret of the Old Clock by Carolyn Keene
• The Clue by Carolyn Wells
• Red Harvest by Dashiell Hammett
• The Dain Curse by Dashiell Hammett
• The Maltese Falcon by Dashiell Hammett
• Clouds of Witness by Dorothy L. Sayers
• Lord Peter Views the Body by Dorothy L. Sayers
• Strong Poison by Dorothy L. Sayers
• The Unpleasantness at the Bellona Club by Dorothy L. Sayers
• Unnatural Death by Dorothy L. Sayers
• Whose Body? by Dorothy L. Sayers
• Trent’s Last Case by E. C. Bentley
• Short Fiction by Edgar Allan Poe
• Kate Plus 10 by Edgar Wallace
• The Crimson Circle by Edgar Wallace
• The Roman Hat Mystery by Ellery Queen
• File No. 113 by Émile Gaboriau
• Monsieur Lecoq by Émile Gaboriau
• The Lerouge Case by Émile Gaboriau
• The Mystery of Orcival by Émile Gaboriau
• The Slaves of Paris by Émile Gaboriau
• The Mystery of a Hansom Cab by Fergus Hume
• The Bellamy Trial by Frances Noyes Hart
• Hunting for Hidden Gold by Franklin W. Dixon
• The House on the Cliff by Franklin W. Dixon
• The Missing Chums by Franklin W. Dixon
• The Mystery of Cabin Island by Franklin W. Dixon
• The Secret of the Caves by Franklin W. Dixon
• The Secret of the Old Mill by Franklin W. Dixon
• The Shore Road Mystery by Franklin W. Dixon
• The Tower Treasure by Franklin W. Dixon
• The Midnight Guest by Fred M. White
• Inspector French’s Greatest Case by Freeman Wills Crofts
• The Box Office Murders by Freeman Wills Crofts
• The Ponson Case by Freeman Wills Crofts
• The Sea Mystery by Freeman Wills Crofts
• The Starvel Hollow Tragedy by Freeman Wills Crofts
• The Brooklyn Murders by G. D. H. Cole
• The Incredulity of Father Brown by G. K. Chesterton
• The Innocence of Father Brown by G. K. Chesterton
• The Secret of Father Brown by G. K. Chesterton
• The Wisdom of Father Brown by G. K. Chesterton
• The Mystery of the Yellow Room by Gaston Leroux
• The Phantom of the Opera by Gaston Leroux
• The Lazy Detective by George Dilnot
• Tracks in the Snow by Godfrey R. Benson
• A Bid for Fortune by Guy Boothby
• Murder in the Gunroom by H. Beam Piper
• Call Mr. Fortune by H. C. Bailey
• The Big Bow Mystery by Israel Zangwill
• Murder in the Maze by J. J. Connington
• Mystery at Lynden Sands by J. J. Connington
• Tragedy at Ravensthorpe by J. J. Connington
• Scarhaven Keep by J. S. Fletcher
• The Borough Treasurer by J. S. Fletcher
• The Charing Cross Mystery by J. S. Fletcher
• The Middle of Things by J. S. Fletcher
• The Middle Temple Murder by J. S. Fletcher
• The Paradise Mystery by J. S. Fletcher
• The Talleyrand Maxim by J. S. Fletcher
• The Room in the Dragon Volant by J. Sheridan Le Fanu
• The Wyvern Mystery by J. Sheridan Le Fanu
• Uncle Silas by J. Sheridan Le Fanu
• Simon by J. Storer Clouston
• The Powerhouse by John Buchan
• The Murders in Praed Street by John Rhode
• Ashton-Kirk, Investigator by John T. McIntyre
• The Man in the Queue by Josephine Tey
• Lady Audley’s Secret by M. E. Braddon
• The Crime at Black Dudley by Margery Allingham
• The Lodger by Marie Belloc Lowndes
• The Story of Ivy by Marie Belloc Lowndes
• The Circular Staircase by Mary Roberts Rinehart
• The Man in Lower Ten by Mary Roberts Rinehart
• The Patient in Room 18 by Mignon G. Eberhart
• The Rasp by Philip MacDonald
• Fantômas by Pierre Souvestre, Marcel Allain
• The D’Arblay Mystery by R. Austin Freeman
• The Eye of Osiris by R. Austin Freeman
• The Mystery of 31, New Inn by R. Austin Freeman
• The Red Thumbmark by R. Austin Freeman
• The Footsteps at the Lock by Ronald A. Knox
• The Three Taps by Ronald A. Knox
• The Viaduct Murder by Ronald A. Knox
• The Benson Murder Case by S. S. Van Dine
• The Canary Murder Case by S. S. Van Dine
• The Greene Murder Case by S. S. Van Dine
• The Insidious Dr. Fu-Manchu by Sax Rohmer
• The Magician by W. Somerset Maugham