Published in 1890, The Sign of the Four is the second Sherlock Holmes novel — a labyrinthine mystery involving a stolen Indian treasure, a secret pact, a wooden-legged man, and a thrilling chase down the Thames. It also introduces Mary Morstan, who would become Dr. Watson’s wife, adding a welcome romantic dimension to the partnership between Holmes and Watson.
Conan Doyle’s plotting is at its most inventive here, and the novel’s exotic backstory gives it a vivid, adventure-story energy. Download this free EPUB from Better Gutenberg for the complete text of this beloved Holmes classic.