Books about Mystery fiction (sorted alphabetically)
- Cloomber Hallin salaisuus (Finnish) Arthur Conan Doyle
- Coast of Chance Esther Chamberlain and Lucia Chamberlain
- Convict B 14: A Novel R. K. Weekes
- Cord and Creese James De Mille
- Corner House Girls Grace Brooks Hill
- Creature of the Night: An Italian Enigma Fergus Hume
- Crime of the French Café and Other Stories Nicholas Carter
- Crimson Blind Fred M. White
- Crimson Flash Roy J. Snell
- Crossed Trails in Mexico Helen Randolph
- crystal claw William Le Queux
- Danger at Mormon Crossing Robert Leckie
- Datchet Diamonds Richard Marsh
- Daughter of the Forest Evelyn Raymond
- Dave Fearless and the Cave of Mystery; or, Adrift on the Pacific Roy Rockwood
- Dead Man's Love Tom Gallon
- December Love Robert Hichens
- Deep Moat Grange S. R. Crockett
- Destroying Angel Louis Joseph Vance
- Devil's Dice William Le Queux
- Diamond Ship Max Pemberton
- Dick Merriwell Abroad; Or, The Ban of the Terrible Ten Burt L. Standish
- Dick Merriwell's Pranks; Or, Lively Times in the Orient Burt L. Standish
- Dick Merriwell's Trap; Or, The Chap Who Bungled Burt L. Standish
- Dig Here! Gladys Allen