Larry Cohen Director, Writer, Producer Michael Moriarty Jimmy Quinn Actor David Carradine Detective Shepard Actor Candy Clark Joan Actor Richard Roundtree Powell Actor John Capodice Doyle Actor James Dixon Lt. Murray Actor Ron Cey Detective Hoberman Actor Samuel Z. Arkoff Executive Producer Dick Di Bona Executive Producer Paul Kurta Associate Producer Peter Sabiston Executive Producer Dan Sandburg Executive Producer Fred Murphy Cinematographer Armond Lebowitz Film Editing Robert O. Ragland Original Music