Extraterrestrials traveling in high-tech flying saucers contact scientist Dr. Russell Marvin as part of a plan to enslave the inhabitants of Earth.

The first U.S. spaceship to Venus crash-lands off the coast of Sicily on its return trip. A dangerous, lizard-like creature comes with it and quickly grows gigantic.

A spaceship from another world crashes in the Arizona desert and only an amateur stargazer and a schoolteacher suspect alien influence when the local townsfolk begin to act strangely.

As a new star and planet hurtle toward a doomed Earth, a small group of survivalists frantically work to complete the rocket which will take them to their new home.

The earliest atomic tests in New Mexico cause common ants to mutate into giant man-eating monsters that threaten civilization.

A giant, radioactive octopus rises from the Philippine Trench to terrorize the North American Pacific Coast.

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

A ferocious dinosaur awakened by an Arctic atomic test terrorizes the North Atlantic and, ultimately, New York City.

When a spaceship lands on the moon, it is hailed as a new accomplishment, before it becomes clear that a Victorian party completed the journey in 1899, leading investigators to that mission's last survivor.

A young boy learns that space aliens are taking over the minds of earthlings.

A starship crew goes to investigate the silence of a planet's colony only to find two survivors and a deadly secret that one of them has.

A small town in California is attacked by Martians, beginning a worldwide invasion.