The Sign of Four
Sherlock Holmes and Dr. Watson try to track down the Great Mogul, the second-largest diamond in the world.
- genus: Adventure, Crime, Mystery, TV Movie
- Studio: Granada Television, Mapleton Films
- keyword: treasure, river, doctor, pearl, sherlock holmes
- cast: Ian Richardson, David Healy, Thorley Walters, Michael O'Hagan, Cherie Lunghi, Joe Melia