(1951) An alien lands in Washington, D.C. and tells the people of Earth that they must live peacefully or be destroyed as a danger to other planets
(1951) Five astronauts successfully fly to Mars where they encounter seemingly friendly and advanced inhabitants who harbor covert plans to use their ship to invade Earth. Starring Marguerite Chapman and Cameron Mitchell
(1953) A small town in California is attacked by Martians, beginning a worldwide invasion
(1968) While searching for oil in the deadly swamplands of the Florida Everglades, members of a geological expedition meet an insane doctor who is working on an experiment to create a creature that is part man and part alligator. Starring John Agar and Francine York