Helen Mack (November 13, 1913 in Rock Island, Illinois - August 13, 1986 in Beverly Hills, California) started her career in movies as a child actress, but her greater success was as a leading lady in the 1930s. She may be best remembered for the 1933 movie sequel The Son of Kong, as Harold Lloyd's sister in The Milky Way (1936) and as the suicidal Molly Malloy in His Girl Friday (1940). In the 1940s and 1950s, Mack worked as a producer and director of radio programs. As TV succeeded radio as the prevalent entertainment medium, she continued to write plays and TV episodes until her death.