All Cast
Stanley Ridges
Prof. George Kingsley / Red Cannon
Boris Karloff
Dr. Ernest Sovac
Bela Lugosi
Eric Marnay
Anne Nagel
Sunny Rogers
Anne Gwynne
Jean Sovac
Virginia Brissac
Mrs. Margaret Kingsley
Edmund MacDonald
Frank Miller
Paul Fix
William Kane
Murray Alper
Bellhop
Jack Mulhall
Bartender
Raymond Bailey
Louis Devore
Joe King
Chief of Police
John Kelly
Taxi Driver
Jessie Arnold
Nurse
Elfriede Borodin
2nd Nurse
Tommy Conlon
Student
Franco Corsaro
Club Maitre d' (uncredited)
James Craig
Reporter Ernst Gives Notes To
Kernan Cripps
Detective
Eddie Dunn
Det. Farnow
Edward Earle
Detective
Harry Hayden
Prison Doctor
Frank Jaquet
Fat Man in Bar
Ellen Lowe
Midtown Hotel Maid
Jerry Marlowe
Midtown Hotel Clerk
Jerry Marlowe
Cabbie
Wallace Reid Jr.
Student
William Ruhl
G-Man
Frank Sheridan
Prison Chaplain
Edwin Stanley
Dr. Warner
Harry Tenbrook
Cabbie
Emmett Vogan
Det. Carpenter
Russell Wade
Student
Dave Willock
Student
Victor Zimmerman
G-Man