by CG FEWSTON October 23, 2013 Fiction Film Pictures Videos The Sign of Four (1890) by Sir Arthur Conan Doyle The mystery begins when Mary Morstan (in Chapter 2) tells Holmes and Watson about the disappearance of her father, Captain Morstan, and the arrival of a pearl each year for six years. Share the knowledge:TweetWhatsAppMoreTelegramPocketShare on TumblrPrintEmail