Trivia: Clint Eastwood has a small role as a lab technician experimenting with mice.
Trivia: In this 1955 horror film, Hollywood newcomer Clint Eastwood memorably appeared as a lab assistant (a speaking role) with a white rat in his pocket. Earlier the same day on a different set, Eastwood filmed his very first big-screen role as a jet fighter pilot (another speaking role) in the 1955 horror film "Tarantula," making it a big day for Clint Eastwood.