The Adventure of the Dancing Men by Arthur Conan Doyle

A woman receives strange notes containing drawings of stick figures, and Holmes deduces that they form a secret code. As he cracks the cipher, the case escalates into a deadly confrontation tied to her hidden past. The plot is a brilliant fusion of cryptography and emotional tension. Holmes’s ability to decode the messages is central to solving the crime. It’s a fan favorite for its mystery and tragic love story.