Scientists and American Air Force officials fend off a bloodthirsty alien organism while at a remote arctic outpost.

A spider escapes from an isolated Arizona desert laboratory experimenting in giantism and grows to tremendous size as it wreaks havoc on the local inhabitants.

An alien lifeform consumes everything in its path as it grows and grows.

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

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.

A strange prehistoric beast lurks in the depths of the Amazonian jungle. A group of scientists try to capture the animal and bring it back to civilization for study.

An alien lands and tells the people of Earth that they must live peacefully or be destroyed as a danger to other planets.

A small-town doctor learns that the population of his community is being replaced by emotionless alien duplicates.

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.

A scientist has a horrific accident when he tries to use his newly invented teleportation device.

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