Margaret Brooke Sullavan was an American stage and film actress. Sullavan began her career onstage in 1929. In 1933 she caught the attention of movie director John M. Stahl and had her debut on the screen that same year in Only Yesterday. Sullavan preferred working on the stage and made only 16 movies, four of which were opposite James Stewart in a popular partnership. She retired from the screen in the early forties, but returned in 1950 to make her last movie, No Sad Songs for Me, in which she plays a woman who is dying of cancer. For the rest of her career she would only appear on the stage. She was nominated for an Academy Award for Best Actress for her performance in Three Comrades. Sullavan made no further films, and acted only on the stage, after 1950. She experienced increasing hearing problems, depression, and mental frailty in the 1950s. She died of an overdose of barbiturates, which was ruled accidental, on January 1, 1960 at the age of 50.