Murder by Decree

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). (official distributor synopsis)