James MacArthur and Shirley Popkin
"ON CAREER THRESHOLD: James MacArthur, son of Helen Hayes and the late Charles MacArthur, making his first motion picture, RKO's The Young Stranger, welcomes another screen newcomer to the cast. She is Shirley Popkin, former studio messenger who has role in MacArthur's picture in which he is starred with Kim Hunter and James Daly."