The Sign of Four
- Leto: 1987
- Država: United Kingdom
- Žanr: ТВ film, Avantura, Кriminalni, Misterija, Тriler
- Studio: Granada Television
- Ključna beseda: treasure, based on novel or book, river, doctor, sherlock holmes
- Direktor: Peter Hammond
- Igralska zasedba: Jeremy Brett, Edward Hardwicke, Jenny Seagrove, Ronald Lacey, John Thaw, Emrys James