Genres

Ultra-low budget and very violent rip-off of "Alien". A space module lands back to Earth after a failed mission, but the astronauts have been replaced by hideous creatures that can penetrate into people's bodies and make them explode. A group of speleologists are attacked by the monsters inside an underground cave, but the survivors are in for a surprise when they finally manage to escape the trap...

Tourists take a boat to a remote island, where they find that most of the people have disappeared, and something is stalking them. They find a hidden room in the big mansion on a hill, and an ancient diary, which gives them clues to the source of the terror.