Jack Smight Director Charlton Heston Alan Murdock Actor Karen Black Nancy Pryor Actor George Kennedy Joe Patroni Actor Efrem Zimbalist Jr. Captain Stacy Actor Susan Clark Helen Patroni Actor Helen Reddy Sister Ruth Actor Gloria Swanson Self Linda Blair Janice Abbott Actor Dana Andrews Scott Freeman Actor Sid Caesar Barney Actor Myrna Loy Mrs. Devaney Actor Nancy Olson Mrs. Abbott Actor Roy Thinnes Urias Actor Martha Scott Sister Beatrice Actor Don Ingalls Writer William Frye Producer Jennings Lang Executive Producer Philip H. Lathrop Cinematographer J. Terry Williams Film Editing John Cacavas Original Music George C. Webb Art Director Mickey S. Michaels Set Decoration Edith Head Costume Design