Books about Detective and mystery stories (sorted alphabetically)
- Siren Thomas Adolphus Trollope
- Six little Bunkers at Grandma Bell's Laura Lee Hope
- Sixty-First Second Owen Johnson
- skeleton key Bernard Capes
- Sky Detectives; Or, How Jack Ralston Got His Man Ambrose Newcomb
- Sky Pilot's Great Chase; Or, Jack Ralston's Dead Stick Landing Ambrose Newcomb
- Smugglers' Reef: A Rick Brant Science-Adventure Story Harold L. Goodwin
- Snarled Identities; Or, A Desperate Tangle Nicholas Carter
- Social Gangster Arthur B. Reeve
- Solitary Farm Fergus Hume
- Some Adventures of Mr. Surelock Keys Herbert Beeman
- Somnambulist and the Detective; The Murderer and the Fortune Teller Allan Pinkerton
- Son of Ishmael: A Novel L. T. Meade
- Sordman the Protector Tom Purdom
- S.O.S. Aphrodite! Stanley Mullen
- Soul Scar: A Craig Kennedy Scientific Mystery Novel Arthur B. Reeve
- Special Detective (Ashton-Kirk) John T. McIntyre
- Spider Fergus Hume
- Splashes of red J. Frank Davis
- Splendid Outcast George Gibbs
- Spruce Street Tragedy; or, Old Spicer Handles a Double Mystery
- Starvel Hollow tragedy : An Inspector French case Freeman Wills Crofts
- Stellar Showboat Malcolm Jameson
- step on the stair Anna Katharine Green
- Stolen Brain; Or, A Wonderful Crime Nicholas Carter