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. Their search for the murderer uncovers a story of love and revenge-and heralds a franchise of detective mysteries starring the formidable Holmes.