En route from Washington, D.C., champion tennis player Guy Haines (Farley Granger) meets pushy playboy Bruno Anthony (Robert Walker). What begins as a chance encounter turns into a series of morbid confrontations, as Bruno manipulates his way into Guy's life. Bruno is eager to kill his father and knows Guy wants to marry a senator's daughter (Ruth Roman) but cannot get a divorce from his wife, Miriam (Laura Elliot). So Bruno suggests the men swap murders, which would leave no traceable clues or possible motives. Though Guy refuses, it will not be so easy to rid himself of the psychopathic Bruno. The film is tightly paced and disturbing from beginning to end, an effect heightened by Hitchcock's inventive camera work, including a terrifying sequence shot through a pair of eyeglasses that have been knocked to the ground.