She was educated at Barnard College, studied dance and worked on stage and TV before making her film debut as a sexy Southern majorette in Elia Kazan's A Face in the Crowd (1957). Her next role was also southern: Eula Varner in The Long, Hot Summer (1958). She emerged as a real star in the role of an apparent rape victim in Anatomy of a Murder (1959). And she won an Academy Award nomination for her role as the alcoholic wife of Jack Lemmon in Days of Wine and Roses (1962). After more work in TV and movies, she moved to England in 1970, making more movies there. In 1988 she formed a production company with partners James Garner and Peter K. Duchow.