An American professor (Antonio Cantafora) travels to Austria to the estate of his ancestor, the sadistic Baron Otto von Kleist. Seeking to find the truth beneath the Baron's notorious reputation. It is believed that the Baron was cursed to a violent death by a witch whom the Baron burned at the stake.
When the professor and his assistant Eva (Elke Sommer) read aloud an ancient incantation, the Baron's spirit is resurrected, leading to a series of violent deaths within the haunted castle. It seems that the incantation has returned the Baron to continue his murderous tortures!
Also known as Gli orrori del castello di Norimberga