The Sign of the Four

Set in 1888, the narrative weaves a complex tale involving the East India Company, the Indian Rebellion of 1857, and a stolen treasure linked to a secret pact among four convicts and two corrupt guards. The story delves into the detective's drug habit, adding depth to his character and exploring his humanity, a notable shift from previous portrayals. This intricate plot combines adventure with themes of betrayal and moral ambiguity, enriching the detective genre.