State Trooper
A man wrongly imprisoned for murder breaks out of jail. He wants to clear his name, but with the police pursuing him, he's forced to take a beautiful young woman, driving a fast sports car, hostage and slip into a cross-border sports car race to try to make it to Mexico before the police get him.
Dr. Baldwin
Julie, an American on vacation in Mexico, spots a giant, one-eyed amoeba rising from the ocean, but when she tries to tell the authorities, no one believes her. She finally teams up with a marine biologist in an attempt to destroy it.
Reporter with Dugan (extra) (uncredited)
Author & amateur astronomer John Putnam and schoolteacher Ellen Fields witness an enormous meteorite come down near a small town in Arizona, but Putnam becomes a local object of scorn when, after examining the object up close, he announces that it is a spacecraft, and that it is inhabited...
Prosecutor (as Richard Pinner)
A young woman's suicide attempt is stopped by an old man passing by. The two fall in love -- but the relationship between the young girl and old man is threatened when a blackmailer from her past shows up.