

29/02/1940
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.

Stanley Ridges
as Prof. George Kingsley / Red Cannon

Boris Karloff
as Dr. Ernest Sovac

Bela Lugosi
as Eric Marnay

Anne Nagel
as Sunny Rogers

Anne Gwynne
as Jean Sovac

Virginia Brissac
as Mrs. Margaret Kingsley

Edmund MacDonald
as Frank Miller

Paul Fix
as William Kane

Murray Alper
as Bellhop

Jack Mulhall
as Bartender

Raymond Bailey
as Louis Devore

Joe King
as Chief of Police

John Kelly
as Taxi Driver

Jessie Arnold
as Nurse

Elfriede Borodin
as 2nd Nurse

Tommy Conlon
as Student

Franco Corsaro
as Club Maitre d' (uncredited)

James Craig
as Reporter Ernst Gives Notes To

Kernan Cripps
as Detective

Eddie Dunn
as Det. Farnow

Edward Earle
as Detective

Harry Hayden
as Prison Doctor

Frank Jaquet
as Fat Man in Bar

Ellen Lowe
as Midtown Hotel Maid

Jerry Marlowe
as Midtown Hotel Clerk

Jerry Marlowe
as Cabbie

Wallace Reid Jr.
as Student

William Ruhl
as G-Man

Frank Sheridan
as Prison Chaplain

Edwin Stanley
as Dr. Warner

Harry Tenbrook
as Cabbie

Emmett Vogan
as Det. Carpenter

Russell Wade
as Student

Dave Willock
as Student

Victor Zimmerman
as G-Man

Robert Morgan
as Hotel Associate
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