Description Sir Ronald Burton (Greene), a British gentleman, investigates the disappearance of two of his friends at the Austrian estate of the sinister Count von Bruno (McNally). Bruno secretly seeks revenge against the leaders of a British force that set the natives against him in colonial Africa: Burton's missing friends are among Bruno's victims, and Burton is now also in the trap. Burton plans to escape with Bruno's abused Countess, but the Count's henchmen bar the way.
El castillo del ogro, Le mystère du château noir, Il mistero del castello nero, O Castelo do Pavor, Das schwarze Schloß
