Unfaithful is a 2002 American erotic thriller film directed and produced by Adrian Lyne and written by Alvin Sargent and William Broyles Jr., adapted from the Claude Chabrol film The Unfaithful Wife (1969). Starring Richard Gere, Diane Lane, Olivier Martinez, and Erik Per Sullivan, the film follows Edward and Connie Sumner, a couple living in the suburbs of New York City whose marriage is jeopardized when the wife has an affair with a stranger (Martinez) she encounters by chance.