When American writer Mark Halliday visits the very married Margot Wendice in London, he unknowingly sets off a chain of blackmail and murder.

Genre: Crime, Thriller Actors: Alfred Hitchcock, Anthony Dawson, Bess Flowers, Forbes Murray, George Alderson, George Leigh, Grace Kelly, Guy Doleman, Harold Miller, Herschel Graham, Jack Cunningham, John Williams, Leo Britt, Martin Milner, Patrick Allen, Ray Milland, Robert Cummings, Robert Dobson, Robin Hughes, Sam Harris, Thayer Roberts, William H. O'Brien Directors: Alfred Hitchcock Production: Warner Bros. Pictures