 Lynn acted in about 30 plays at the Pasadena Playhouse.He appeared in films such as "Sinner Take All" (1936), the MGM Academy Award nominated short "Torture Money" (1937), "The Great Dictator" (1940), and "To Be or Not to Be" (1942).Towards the end of his career he appeared in television series such as "The Adventures of Rin Tin Tin" (1956–8), "The Untouchables" (1959) and "The Deputy" (1961).