Belladonna

When the first manned flight to Venus returns to Earth, the rocket crash-lands in the Mediterranean near a small Italian fishing village. The locals manage to save one of the astronauts Colonel Calder, the mission commander. A young boy also recovers what turns out to be a specimen of an alien creature. Growing at a fantastic rate, it manages to escape and eventually threatens the city of Rome.

After witnessing a brutal murder on Halloween night, a young woman becomes the next target of a maniacal entity.

A troubled young man is drawn to a mythical place called Midian where a variety of friendly monsters are hiding from humanity. Meanwhile, a sadistic serial killer is looking for a patsy.

The first manned expedition to Mars is invaded by an unknown life form, which stows away on the rescue ship.