The Sign of Four by Arthur Conan Doyle
This classic detective novel follows the brilliant investigator and his loyal friend as they tackle a complex case involving a stolen treasure, a secret pact among four convicts and two mismatched allies, a wooden-legged man and a dwarf. The story, set in 19th century London, is a thrilling tale of mystery, murder, and a beautiful woman's desperate plea for help, which leads them on a high-speed chase through the city's murky backstreets and bustling river docks. The duo's deductive skills are tested to the limit in this multi-layered narrative that explores themes of justice, betrayal, and the destructive power of greed.