Books in Detective Fiction (sorted alphabetically)
- parfum de la Dame en noir (French) Gaston Leroux
- Passenger from Calais Arthur Griffiths
- Poirot Investigates Agatha Christie
- Rayner-Slade Amalgamation J. S. Fletcher
- Red House Mystery A. A. Milne
- Red Thumb Mark R. Austin Freeman
- Red Triangle: Being Some Further Chronicles of Martin Hewitt, Investigator Arthur Morrison
- Return of Sherlock Holmes Arthur Conan Doyle
- Return of Sherlock Holmes Arthur Conan Doyle
- Return of Sherlock Holmes Arthur Conan Doyle
- R. Holmes & Co. John Kendrick Bangs
- Riddle of the Frozen Flame Thomas W. Hanshew and Mary E. Hanshew
- Rome Express Arthur Griffiths
- Scarhaven Keep J. S. Fletcher
- Secret Adversary Agatha Christie
- Secret of the Night Gaston Leroux
- Shrieking Pit Arthur J. Rees
- Sign of the Four Arthur Conan Doyle
- Sign of the Four Arthur Conan Doyle
- Sleuth of St. James's Square Melville Davisson Post
- Strange Disappearance Anna Katharine Green
- Study in Scarlet Arthur Conan Doyle
- Study in Scarlet Arthur Conan Doyle
- Talleyrand Maxim J. S. Fletcher
- That Affair at Elizabeth Burton Egbert Stevenson