What a weird movie. Alright, I admit I am really into B-Movies. But if a B-Movie could be called a good plane flying under the radar, then this movie is a loop of crash landings and not in your good 'Ed Woodian' Way. And it is a disappointment to Terence Fisher fans. It may be marketed as a Lee/Cushing gem but is missing the class of their other collaborations like Dracula and The Mummy (Cushing only has a guest starring role anyway). Of course, some funny moments lighten up the movie, such as the awfully bad acting, the weird creatures and the nymphomanic young beat-girl taking of her clothes all the time - the movie is from 67 after all.
You should stay away from that movie though and rather watch some better Terence Fisher movies that are definitely out there.