The Sign of Four
- Ano: 1983
- País: United Kingdom
- Xénero: Adventure, Crime, Mystery, TV Movie
- Estudo: Granada Television, Mapleton Films
- Palabra clave: treasure, river, doctor, pearl, sherlock holmes
- Director: Desmond Davis
- Reparto: Ian Richardson, David Healy, Thorley Walters, Michael O'Hagan, Cherie Lunghi, Joe Melia