Between 1887 and 1927, Sir Arthur Conan Doyle wrote 60 Sherlock Holmes stories, and his great canon has become the most studied chapter in the history of detective fiction. From the very first, the fascination of the original stories was such that other authors soon began writing new stories derived from Holmes. In almost every year of the 20th century pastiches, parodies, burlesques, copies and rivals of the detective appeared, but no comprehensive attempt has previously been made to collect and discuss these stories, all of which are of historical interest. "The Alternative Sherlock Holmes"...