Hank Davis, foreman on a huge dam project, enlists the aid of his two flyer friends when a sinister figure known as The Black Ace leads his Mystery Squadron of masked pilots in an attempt to destroy the dam.
Rated NR | Length 227 minutes
Bob Steele | Guinn Williams | Lucile Browne | Jack Mulhall | Purnell Pratt | Robert Frazer | J. Carrol Naish | Bob Kortman | Lafe McKee | Edward Hearn | Kernan Cripps | Edward Peil Sr. | Jack Mower | Jack Perrin