Books about Mystery fiction (sorted alphabetically)
- riddle of the rangeland Forbes Parkhill
- Rogues' Haven Roy Bridges
- Roy Blakeley's Silver Fox Patrol Percy Keese Fitzhugh
- Salaperäinen nainen (Finnish) Wilkie Collins
- Samurai Strategy Thomas Hoover
- Sapphire Signet Augusta Huiell Seaman
- School by the Sea Angela Brazil
- Sea Mew Abbey Florence Warden
- Search For A Secret: A Novel. Vol. 1 G. A. Henty
- Search For A Secret: A Novel. Vol. 2 G. A. Henty
- Search For A Secret: A Novel. Vol. 3 G. A. Henty
- Second Dandy Chater Tom Gallon
- Secret Inheritance (Volume 1 of 3) B. L. Farjeon
- Secret Inheritance (Volume 2 of 3) B. L. Farjeon
- Secret Inheritance (Volume 3 of 3) B. L. Farjeon
- Secret Mark Roy J. Snell
- Secret Martians Jack Sharkey
- Secret of Casa Grande Helen Randolph
- Secret of the Reef Harold Bindloss
- Secret of the Tower Anthony Hope
- Secret of Wyvern Towers T. W. Speight
- secret spring Pierre Benoît
- Secret Tomb Maurice Leblanc
- Seven Miles to Arden Ruth Sawyer
- Shifting Sands Sara Ware Bassett