Threshold (1981 film) starred only one actor, Donald Sutherland.
When asked later by an interviewer why he eventually gave up directing and returned full-time to acting, Crisp commented that directing had become extremely wearisome because he was so often called upon, if not forced, to do favours for studio chiefs by agreeing to employ their relatives in his films
 He won an Academy Award for Best Supporting Actor in 1942 for his performance in How Green Was My Valley

