Артур Конан Дойл - A Study in Scarlet

In the debut of literature's most famous sleuth, a dead man is discovered in a bloodstained room in Brixton. The only clues are a wedding ring, a gold watch, a pocket edition of Boccaccio's Decameron, and a word scrawled in blood on the wall. With this investigation begins the partnership of Sherlock Holmes and Dr. Watson.