Sign of the Four

A missing father. A secret pact. A treasure that comes at a deadly price. The Sign of the Four (1890), by Sir Arthur Conan Doyle, is the thrilling second Sherlock Holmes novel, showcasing the detective's brilliance and cementing his legendary partnership with Dr. Watson. When Mary Morstan seeks Holmes' help in solving the mystery of her vanished father and a series of cryptic gifts, the case u...