The Sign of the Four The Sign of the Four The Sign of the Four (1890), also called The Sign of Four, is the second novel featuring Sherlock Holmes written by Sir Arthur Conan Doyle. Doyle wrote four novels and 56 short stories featuring the fictional detective. The story is set in 1888. "The Sign of the Four" has a complex plot involving service in India, the Indian Rebellion of 1857, a stolen treasure, and a secret pact among four convicts ("the Four" of the title) and two corrupt prison guards. It presents the detective's drug habit and humanizes him in a way that had
Adrian Conan Doyle Adventures of Sherlock Holmes". Sir Arthur's widow Jean chose a spiritualist, the Rev. John Lamond, to write an authorised life of him, "Arthur Conan Doyle: A Memoir" (John Murray, 1931). The memoir emphasised his paranormal interests but was not what readers wanted, so after their mother's death Adrian and Denis grudgingly allowed Hesketh Pearson to write "Conan Doyle: His Life and Art" (Methuen, 1943). But Pearson's book offended Adrian and Denis by saying that the secret of their father's success was that he was the "common man". Adrian threatened criminal proceedings against Pearson's "fakeography", and wrote an article in protest,