The younger sister of actress Alice Day, Marceline Day achieved stardom in the mid-'20s, appearing opposite such stars as John Barrymore and Lon Chaney. Adept at comedy, she also starred with such top comics as Buster Keaton and Harry Langdon. Her career faltered in the early '30s, however, and she was soon reduced to appearing in low-budget thrillers and action pictures. She retired in the mid-'30s.