Unfaithful is a 2002 American thriller drama film directed by Adrian Lyne and starring Richard Gere, Diane Lane, Chad Lowe, Dominic Chianese and Olivier Martinez. It was adapted by Alvin Sargent and William Broyles Jr. from the French film The Unfaithful Wife (La Femme infidèle, 1968) by the noted director Claude Chabrol. It tells about a couple living in suburban New York City whose marriage goes dangerously awry when the wife indulges in an adulterous affair with a stranger she encounters by chance.