Fine chilling & gothic giallo in (sort of) classic tradition without being too over-the-top sometimes, but why add in a gorilla? Ortolani's score - my god, sounded little uncomortable yet fits in the suspense pretty well.
A gothic giallo set in a great castle setting with secret passages and spooky graveyards. The film is quite interesting visually but it doesn't manage to build up quite enough suspense. Unusually low on gore and nudity (not necessarily a bad thing) and the film's final twist seems less interesting than the colourful lamp held by the killer in the final scene.