After being decapitated in 1454, sorcerer Alaric de Marnac's head is rediscovered in the 1970s. A group of friends conducts a séance and connect with his spirit. They then set out to find his remains. He subsequently possesses some of them in order to bring his dead wife back to life and murder scores of nearby innocents. Filmed in Spain. Written by Paul Naschy (as Jacinto Molina). Cinematography by Manuel Merino. Produce by Ricardo Munoz Suay, Jose Antonio Perez Giner, and Modesto Perez Redondo.