Murder Most Foul

In "Murder Most Foul," Margaret Rutherford stars as Miss Jane Marple, a keen amateur detective, as she is seconded onto a jury to investigate the murder of Margaret McGinty, a barmaid and former actress. Miss Marple uncovers a web of blackmail and deceit involving the local theatre company, led by Ron Moody's character, H. Driffold Cosgood, and ultimately unmasks the killer, Bill Hanson, who was blackmailed by McGinty over his past.