When American writer Mark Halliday visits the very married Margot Wendice in London, he unknowingly sets off a chain of blackmail and murder. After sensing Margot's affections for Halliday, her husband, Tony Wendice, fears divorce and disinheritance, and begins to plot her death.

• 1 hr 46 min
• Directed by

  Alfred Hitchcock
• Written by Frederick Knott

• Starring

  Ray Milland

  ,

  Grace Kelly

  ,

  Robert Cummings

  ,

  John Williams

  ,

  Anthony Dawson

  ,

  Patrick Allen

  ,

  Leo Britt

  ,

  George Leigh

  ,

  George Alderson

  ,

  Robin Hughes

  ,

  Guy Doleman

  ,

  Jack Cunningham

  ,

  Sam Harris