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The Sign of Four (1983)96 minCrime, MysteryRating 63/100

A young woman hires Sherlock Holmes and Dr. Watson to look into her father's friends' mysterious deaths and find the world's second-largest diamond.

Cast: Ian Richardson, David Healy, Thorley Walters, Michael O'Hagan, Cherie Lunghi, Joe Melia, Terence Rigby

Director: Desmond Davis