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Ray Milland
Tony Wendice
Grace Kelly
Margot Wendice
Robert Cummings
Mark Halliday
John Williams
Chief Inspector Hubbard
Anthony Dawson
Charles Swann
Leo Britt
Storyteller
Patrick Allen
Detective PearsonGeorge Leigh
Detective WilliamsGeorge Alderson
First Detective
Robin Hughes
Police Sergeant O'Brien
Jack Cunningham
Bobby (uncredited)
Guy Doleman
Detective (uncredited)
Bess Flowers
Woman Exiting Ship (uncredited)Sam Harris
Man in Phone Booth (uncredited)
Harold Miller
Men's Club Party Member (uncredited)
Martin Milner
Policeman Outside Wendice Flat (uncredited)
Forbes Murray
Judge at Margot's Trial (uncredited)
Thayer Roberts
Detective (uncredited)
William H. O'Brien
Waiter at Stag Dinner (uncredited)
Alfred Hitchcock
Banquet Member (uncredited)Herschel Graham
Banquet Member (uncredited)Robert Dobson
Police Photographer (uncredited)