The Sign of Four

📗 How often have I said to you that when you have eliminatedthe impossible, whatever remains, however improbable, must be the truth?

When Sherlock Holmes is visited by a distressed young woman one dark and foggy night, he listens intently as she tells him about the disappearance of her father ten years before and how, four years after his death, she began to receive a large and beautiful pearl once a year every year.
Now she has a letter from the person who sent her the pearls: they wish to meet her.


So begins a mysterious adventure involving Holmes, his faithful sidekick Dr Watson, and the young woman, Mary Marston.


Written by Sir Arthur Conan Doyle, this was the second novel to feature the world-class detective, Sherlock Holmes, and thefirst to introduce the character of Miss Marston.