In this movie Paul Naschy is once again play the werewolf Waldemar Daninsky. An space alien in human form brings him back to life as part of his plan to destroy the human race so the people of his planet can take over the Earth. The alien is played by Micheal Rennie. It would be his last film role.
The aliens working out of an old castle also gather together some other monsters including a vampire, a mummy, and a Frankenstein style monster. For some reason the monster is not called Frankenstein.
This is not a great motion picture but it is a good movie to munch popcorn while you watch it.
There is various prints of the film around. The worst print was a VHS tape under the title DRACULA VS FRANKENSTEIN. (Not to be confused with the Al Adamson film of the same name)