Patty McCormack is an American actress best known for her role as Rhoda Penmark in the 1956 film The Bad Seed. Her performance as a manipulative child earned her critical acclaim and established her as a talented young actress in Hollywood. Born on August 21, 1945, in Brooklyn, New York, McCormack began her career in television and theater before transitioning to film. Over the years, she has appeared in various movies and TV shows, showcasing her versatility as an actress.