Like so many other Hitchcock "heroes," Seymour Johnston (Hurd Hatfield) thinks that he has planned the perfect murder. Disguising himself as another person, Seymour kills his wealthy Aunt Muriel (Mildred Dunnock). Certain that the police will blame the "other person" for the crime, Seymour is more than willing to cooperate with their investigation -- but alas, he makes the proverbial "one fatal slip." ~ Hal Erickson, Rovi