University professor George Kingsley is struck by gangsters while crossing the street, leaving him with brain damage and one of the gangsters, Cannon, paralyzed. Kingsley's friend Dr. Sovac attends to both men, and when Cannon offers him a reward for aiding his recovery, Kovac transplants part of Cannon's brain into the dying Kingsley's skull, creating a dual personality.
as Prof. George Kingsley / Red Cannon
as Dr. Ernest Sovac
as Eric Marnay
as Sunny Rogers
as Jean Sovac
as Mrs. Margaret Kingsley
as Frank Miller
as William Kane
as Bellhop
as Bartender
as Louis Devore
as Chief of Police
as Taxi Driver
as Nurse
as 2nd Nurse
as Student
as Club Maitre d' (uncredited)
as Reporter Ernst Gives Notes To
as Detective
as Det. Farnow
as Detective
as Prison Doctor
as Fat Man in Bar
as Midtown Hotel Maid
as Midtown Hotel Clerk
as Cabbie
as Student
as G-Man
as Prison Chaplain
as Dr. Warner
as Cabbie
as Det. Carpenter
as Student
as Student
as G-Man
as Hotel Associate
