The Brain Eaters is a 1958 American science fiction-horror film about alien parasites who invade the small Illinois town of Riverdale and are able to take over any living thing, mind and body, by attaching themselves to their host's back and inserting two mandibles into the base of their spines. The film was directed by Bruno VeSota and stars Ed Nelson, Alan Jay Factor, Joanna Lee, with a brief appearance by Leonard Nimoy (name misspelled in 10th place in the credits as "Leonard Nemoy").