Books about Detective and mystery stories (sorted alphabetically)
- Secret of Lonesome Cove Samuel Hopkins Adams
- Secret of the Night Gaston Leroux
- Secret of the Silver Car Wyndham Martyn
- Secret Toll Paul Thorne and Mabel Thorne
- Seven Keys to Baldpate Earl Derr Biggers
- Seven Secrets William Le Queux
- Shadow Arthur Stringer
- Shadow in the House Sinclair Gluck
- Shadow, the Mysterious Detective Police Captain Howard
- Sharing Her Crime: A Novel May Agnes Fleming
- Sharper's Downfall; Or, Into the Net Nicholas Carter
- Sherlock Holmes: De Agra-Schat (Dutch) Arthur Conan Doyle
- Shrieking Pit Arthur J. Rees
- Sight Unseen Mary Roberts Rinehart
- Sign at Six Stewart Edward White
- Sign of Silence William Le Queux
- Sign of the Four Arthur Conan Doyle
- Sign of the Four Arthur Conan Doyle
- Sign of the Four Arthur Conan Doyle
- Sign of the Four Arthur Conan Doyle
- Sign of the Stranger William Le Queux
- Silent House Fergus Hume
- silver blade: The true chronicle of a double mystery Charles Edmonds Walk
- Silver Bullet Fergus Hume
- Simon J. Storer Clouston