Born in Washington State, Susan Hart moved with her family to Palm Springs, California, then attended acting classes at the Pasadena Playhouse. Her official film debut was 1964's Ride the Wild Surf -- a more attractive credit than her actual maiden effort, The Slime People (1963). After being trotted out at the annual Hollywood Deb Star ball, Hart was signed to a contract at American International Studios, home of the "Beach Party" bunch. An instinctive comedienne, Hart was seen to best advantage as an affable robot girl in Dr. Goldfoot and the Bikini Machine (1965) and the spectral title character in Ghost in the Invisible Bikini (1966). After leaving films, Hart enjoyed a brief career as a popular singer. The widow of American-International executive James H. Nicolson, the still relatively youthful Susan Hart remarried, and for a while was a member of a precision ice-skating team.