Rene Daalder Director, Screenwriter Derrel Maury David Actor Andrew Stevens Mark Actor Kimberly Beck Theresa Actor Robert Carradine Spoony Actor Roy Underwood Bruce Actor Steve Bond Craig Actor Damon Douglas Paul Actor Cheryl Smith Mary Actor Lani O'Grady Jane Actor Steve Sikes Rodney Actor Dennis Court Arthur Actor Jeffrey Winner Oscar Actor Thomas Logan Harvey Actor Harold Sobel Producer Bertram van Munster Director of Sound Harry Keramidas Film Editing Tommy Leonetti Original Music Russell Tune Art Director