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