This thriller, based on a best-selling novel by Wilson Graham, revolves around Marnie (Tippi Hedren), a pathological liar and compulsive thief who is befriended by her latest victim, Mark Rutland (Sean Connery). Despite his sincere love, dashing looks, and wealth, some deep-seated neurosis makes her emotionally inaccessible, causing him to search her past for an explanation. This is Connery's American film debut.