Fred Williamson Johnny Barrows Director, Actor, Producer, Film Editing Jenny Sherman Nancy Actor Roddy McDowall Tony Da Vince Actor Stuart Whitman Mario Racconi Actor Luther Adler Don Racconi Actor Aaron Banks Capt. O'Malley Actor James Brown Police Sergeant Actor Anthony Caruso Don Da Vince Actor Elliott Gould Prof. Theodore Rasputin Waterhouse Actor Jolivett Cato Screenwriter Charles Walker Screenwriter Lee B. Winkler Executive Producer Paul Riser Original Music Robert Caramico Cinematographer Emmett Cash III Set Decoration