The Sign of Four
- کال: 1987
- هیواد: United Kingdom
- ډول: TV Movie, Adventure, Crime, Mystery, Thriller
- سټوډیو: Granada Television
- کلیدي ټکی: treasure, based on novel or book, river, doctor, sherlock holmes
- ډایرکټر: Peter Hammond
- کاسټ: Jeremy Brett, Edward Hardwicke, Jenny Seagrove, Ronald Lacey, John Thaw, Emrys James