Cast
Don Beddoe
W. S. Hamilton
Forbes Murray
Marvin Brewster / The Professor
Eddie Laughton
Hall
John Dilson
Dr. Alexander Craig
Richard Fiske
Bart Davis
Lorna Gray
Babs McKay
Beatrice Blinn
Brewster's Secretary
Dick Curtis
Korman
John Tyrrell
Williams
Eddie Fetherston
Borden
Robert Paige
Hal Andrews / The Black Falcon
James Craig
John Cummings
Sammy McKim
Billy McKay
Ann Doran
Hamilton's Secretary
Stanley Brown
Charles Bronson