A stolen treasure, a secret pact among four convicts, and two corrupt prison guards. The Sign of the Four also presents the detective's drug habit and humanises him in a way that had not been done in the preceding novel, A Study in Scarlet. It also introduces Doctor Watson's future wife, Mary Morstan.
- LOL! Funny Books
- Love and romance
- Popular Books for Children
- Popular Books for Teens
- Just added
- Comics and graphic books
- See all
- Just added
- Most popular audiobooks
- Popular Audiobooks for Children
- Popular Audiobooks for Teens
- Your next great listen
- See all