Larry Cohen Director, Screenwriter, Producer Fred Williamson Tommy Gibbs Actor Julius Harris Papa Gibbs Actor Gloria Hendry Helen Bradley Actor Margaret Avery Sister Jennifer Actor D'Urville Martin Rev. Rufus Actor Tony King Zach Actor Gerald Gordon Mr. DiAngelo Actor Bobby Ramsen Joe Frankfurter Actor James Dixon Irish Actor Esther Sutherland The Cook Actor Charles MacGuire Hap Actor Samuel Z. Arkoff Executive Producer Peter Sabiston Executive Producer Janelle Webb Producer Freddie Perren Original Music Fonce Mizell Original Music Fenton Hamilton Cinematographer Franco Guerri Film Editing Peter Honess Film Editing Larry Lurin Production Design