Unheimliche Macht was released in the year 1983。Unheimliche Macht is also called as The Keep, Torreón, Satans borg, Paholaisen pesä, Forteresse noire, A Fortaleza Infernal。

Nazis are sent to guard an old, mysterious fortress in a Romanian pass. One of them mistakenly releases an unknown force trapped within the walls. A mysterious stranger senses this from his home in Greece and travels to the keep to vanquish the force. As soldiers are killed, a Jewish man and his daughter (who are both knowledgable of the keep) are brought in to find out what is happening.

Unheimliche Macht actors and actresses include Alberta Watson, Gabriel Byrne, Ian McKellen, Jürgen Prochnow, Robert Prosky, Scott Glenn, William Morgan Sheppard。