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.
Cast
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
Michael Colgan
Tom Donovan
Peter Adams
Mr. Webster
Harlan Warde
Treasury Agent Brooke
Shimen Ruskin
Tailor
John Hamilton
Mr. McNish (uncredited)
Don Brodie
Detective Who Follows Dr. Cory from Hotel (uncredited)
Stapleton Kent
W. J. Higgins (uncredited)
Frank McLure
Man leaving Fuller's Office (uncredited)
William Cottrell
Dr. Crane (uncredited)
Max Wagner
Station Agent (uncredited)
Sam Harris
Man leaving Fuller's Office (uncredited)
Paul Hoffmann
Unknown
Mark Lowell
Unknown
Walter Merrill
Unknown
Charles Sullivan
Unknown
Katherine Yorke
Unknown
Crew
Felix E. Feist
Director, Screenplay
Hugh Brooke
Adaptation
Curt Siodmak
Novel
Herbert L. Strock
Editor, Production Assistant
Joseph F. Biroc
Director of Photography
Jack R. Berne
Assistant Director
Ben Chapman
Production Supervisor
Tom Gries
Producer
Boris Leven
Production Design
Chuck Keehne
Wardrobe Master
Ruby Felker
Hairstylist
Terry Miles
Makeup Artist
Bill Naylor
Sound Effects Editor
Earl Snyder
Sound Mixer
Harry Redmond Jr.
Special Effects
Eddie Dunstedter
Original Music Composer, Conductor
Edward G. Boyle
Set Decoration
Mary Chaffee
Script Supervisor
