Anecdotes

The house used for exterior shots was also used for the Batman television series as "stately Wayne manor."

Castmates Faith Domergue and Jeff Morrow had co-starred together in one other film 16 years earlier, the science fiction classic Les Survivants de l'infini (1955).

Final film of Merry Anders.

Final film of Rodolfo Acosta.

In the 'nazi' room, a lampshade with a swastika on it is made to look like pieces of flesh make up the lampshade.