"When American writer Mark Halliday visits the very married Margot Wendice in London, he unknowingly sets off a chain of blackmail and murder."
Ray Milland
as Tony Wendice
Grace Kelly
as Margot Wendice
Robert Cummings
as Mark Halliday
John Williams
as Chief Inspector Hubbard
Anthony Dawson
as Charles Swann
Leo Britt
as Storyteller
Patrick Allen
as Detective Pearson
George Leigh
as Detective Williams
George Alderson
as First Detective
Robin Hughes
as Police Sergeant O'Brien
Jack Cunningham
as Bobby (uncredited)
Guy Doleman
as Detective (uncredited)
Bess Flowers
as Woman Exiting Ship (uncredited)
Sam Harris
as Man in Phone Booth (uncredited)
Harold Miller
as Men's Club Party Member (uncredited)
Martin Milner
as Policeman Outside Wendice Flat (uncredited)
Forbes Murray
as Judge at Margot's Trial (uncredited)
Thayer Roberts
William H. O'Brien
as Waiter at Stag Dinner (uncredited)
Alfred Hitchcock
as Banquet Member (uncredited)
Herschel Graham
Robert Dobson
as Police Photographer (uncredited)
Edward Carrere
Art Direction
Rudi Fehr
Editor
Dimitri Tiomkin
Original Music Composer
Robert Burks
Director of Photography
Producer
Gordon Bau
Makeup Artist
Director
George James Hopkins
Set Decoration
Mel Dellar
Assistant Director
Moss Mabry
Costume Design
Frederick Knott
Theatre Play
Oliver S. Garretson
Sound
Screenplay
Conductor