The Brain Eaters is a 1958 independently made American black-and-white science fiction-horror film, produced by Ed Nelson (and Roger Corman, uncredited), and directed by Bruno VeSota. The film stars Nelson, Alan Jay Factor, and Joanna Lee and includes a brief appearance by Leonard Nimoy (name misspelled in film credits as "Leonard Nemoy").The Brain Eaters was distributed by American International Pictures as a double feature with either Earth vs. the Spider or Terror from the Year 5000 in different markets.

Plot

In Riverdale, Illinois, a man carrying a lighted glass container bumps into a pedestrian. The container is broken, and a fight ensues.

On their way home, Glenn Cameron and his fiancée, Elaine, are distracted by a light. They stop to investigate in nearby woods and find dead animals before coming upon a metal structure resembling a rocket nose cone.

Two days later, in Washington, D.C., a committee reviews classified army footage of the object. Also noted are several murders in the nearby town. Sen. Walter K. Powers and his assistant Dan Walker fly to Riverdale to investigate and are met by Glenn Cameron, whose father, the mayor, is missing. The three drive to the object's location. Alice Summers, the mayor's secretary, assists Dr. Paul Kettering, the committee's chief investigator, by recording test results. The senator approaches the cone to question Kettering and his assistant, Dr. Wyler. The cone appears to be indestructible, and its interior is a maze of tunnels.

Source: Wikipedia