The True Crime Files of Sir Arthur Conan Doyle — Stephen Hines

Incorporating recently rediscovered original source material relating to two actual true crime cases, this intriguing study recounts two actual criminal investigations--"The Case of George Ernest Thompson Edalji" and "The Case of Oscar Slater"--in which the creator of Sherlock Holmes became involved to prove that two innocent men had been sent to prison for crimes they had not committed.