Ray Milland

Tony Wendice

Grace Kelly

Margot Wendice

Robert Cummings

Mark Halliday

John Williams

Chief Inspector Hubbard

Anthony Dawson

Charles Swann

Patrick Allen

Detective Pearson

Robin Hughes

Police Sergeant O'Brien

Jack Cunningham

Bobby (uncredited)

Guy Doleman

Detective (uncredited)

Bess Flowers

Woman Exiting Ship (uncredited)