The Thing from Another World (1951)

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

A small town in California is attacked by Martians.

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

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

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.

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

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.

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

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.

When Scott Carey begins to shrink because of exposure to a combination of radiation and insecticide, medical science is powerless to help him.

A research facility in Antarctica comes across an alien force that can become anything it touches with 100% accuracy. The members must now find out who's human and who's not before it's too late.