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