Directed by Felix E. Feist | Starring: Lew Ayres, Gene Evans, John Hamilton, Nancy Reagan

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.

IMDb Donovan's Brain movie posters