Mary Duncan starred on Broadway, most notably in 1926's The Shanghai Gesture, and then went to Hollywood and appeared in 16 films, including the 1930's City Girl and the 1931's Five and Ten with Marion Davies, with whom she weekended at San Simeon. But in 1933, after a delightful performance in Morning Glory, a film that brought its leading lady, Katherine Hepburn, her first Oscar as Best Actress, Mary retired.