A scientist takes the brain of dead man and revives it via electrodes as it lays suspended in a tank of liquid. Soon, the brain grows to possess enormous psychic powers and inflicts its personality upon the doctor who saved it, creating a "Jekyll and Hyde" paradigm.
Lew Ayres
Dr. Patrick J. Cory
Nancy Reagan
Janice Cory
Gene Evans
Dr. Frank Schratt
Steve Brodie
Herbie Yocum
Tom Powers
Donovan's Washington Advisor
Lisa Howard
Chloe Donovan
James Anderson
Chief Tuttle
Victor Sutherland
Nathaniel Fuller
