The Diamond Master

Delphi Complete Works of Jacques Futrelle (Illustrated)

49 Tales of The Thinking Machine (49 Detective Stories Featuring Professor Augustus S. F. X. Van Dusen, also known as "The Thinking Machine")

Extraordinary Minds on the Case - 5 Classic Detective Stories & Mysteries

The Edwardian Detectives – 5 Classic Mystery Novels

The Science of the Clue - 5 Classic Scientific Detection Mysteries

Alias, Alibis, and Acute Minds - 7 Classic Clever-Crime Mystery Novels

The Mystery of a Hansom Cab

The Adventures of Sherlock Holmes