The Black Tortoise: Being the Strange Story of Old Frick's Diamond

The Black Tortoise: Being the Strange Story of Old Frick's Diamond is a detective novel by Christian Sparre, published in 1901. The plot follows Monk, a private detective, as he investigates the theft of a valuable diamond from the home of the eccentric Bartholomew Frick. The story features a cast of intriguing characters, including Frick's adopted children, Sigrid and Einar, and explores themes of mystery and humor within a character-driven narrative. Notable for its early 20th-century setting, the novel reflects the conventions of the detective genre of its time.