Cheesy 70s horror film disappoints despite a great cast - Ernest Borgnine's horned Satanic cult leader is matched only by the mere presence of William Shatner, a ridiculous plot, and some great goopy special effects. Even at 84 minutes, it's too long and too slow to be the camp classic it could have been.
It's strange that a film that postdates both Rosemary's Baby and The Exorcist and was supervised by Anton LaVey could feel so comically antiquated in its depiction of Satanic evil. Light on plot, heavy on style, Fuest's film is packed with striking Spaghetti Western-style imagery bathed in lurid Hammer Horror colors. An ace cast, brief running time and unforgettable effects make this an amusing little time-waster.