The Sign of Four

The disappearance of a young woman's father and a mysterious note years later after the strange regular annual delivery of valuable pearls to her puts Sherlock Holmes on the case.

The Sign of Four is a 1988 drama mystery movie directed by Peter Hammond, starring Jeremy Brett, Edward Hardwicke, Robin Hunter. It holds an IMDb rating of 7.8/10 from 5,074 votes and runs 1h 47m.