8.1Movie Sherlock Holmes: The Sign of Four (1987) Mar. 07, 1987 Sherlock Holmes: The Sign of Four (1987) IMDb: 8.1 1987 103 min 3698 views Watch Sherlock Holmes: The Sign of Four (1987) full episodes online free 9cartoon. Synopsis: Mary Morstan has received a pearl in the post every ... AdventureCrimeMysteryThrillerTV Movie