

An evil alien brain, bent on world domination, takes over the body of an atomic scientist, while a "good" alien brain inhabits the body of the scientist's dog and waits for an opportunity to defeat the evil brain.
Practical Effects
Giant floating brain props that deserve their own credit.
Acting
John Agar's possessed eyebrow acting is Shakespearean in commitment.

Director
Nathan Juran
Trivia, insights & behind the scenes
The brain props were reportedly made of painted papier-mâché and bounced on visible wires.
Director Nathan Juran later won an Oscar for art direction — just not for this.
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