Joan Copeland (born June 1, 1922) is an American actress and the younger sister of celebrated playwright Arthur Miller. She began her career appearing in theatre in New York City during the mid 1940s. She moved into television and film during the 1950s while still maintaining an active stage career. She is best known for her performances in the 1977 Broadway revival of Pal Joey and her award winning performance in the 1981 play The American Clock. She has also played a number of prominent roles on various soap operas throughout her career, including Andrea Whiting on Search for Tomorrow and Gwendolyn Lord Abbott on One Life to Live..