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