- HD 1080
- Runtime: 97m.
- Status: Released
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- Languages: en
- Country: United Kingdom
- Director: Desmond Davis
- Stars: Ian Richardson, David Healy, Thorley Walters, Michael O'Hagan, Cherie Lunghi
- keywords: treasure, river, doctor, pearl, sherlock holmes
- Production_studio: Granada Television, Mapleton Films
- providers: Amazon Prime Video, Amazon Prime Video with Ads
- The The Sign of Four is featured in the top rankings of 1983
- #9 in Top Adventure Movies of 1983
- #15 in Top Crime Movies of 1983
- #6 in Top Mystery Movies of 1983
Sherlock Holmes and Dr. Watson try to track down the Great Mogul, the second-largest diamond in the world.
