Sherlock Holmes hunts his deadliest adversary - the madman known as Jack the Ripper! When Scotland Yard is unable to stop the gruesome rampage of Jack the Ripper, a citizens' committee asks Sherlock Holmes (Christopher Plummer) and his trusted associate Dr. Watson (James Mason) to investigate. Now the brilliant pair must follow a terrifying trail of clues that includes a frightened psychic (Donald Sutherland), a suspicious inspector (David Hemmings), an institutionalized woman (Genevieve Bujold) and the Prime Minister of England (Sir John Gielgud). But even if Holmes' remarkable powers of deduction can unmask the maniacal fiend, can he and Watson face the most shocking secret of all? Find out in this masterful suspense thriller directed by Bob Clark (A CHRISTMAS STORY) that both fans and critics have called the most exciting and original Sherlock Holmes movie ever made.