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.
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.
Bob Steele ,Guinn "Big Boy" Williams ,Lucile Browne
William Nobles
Mascot Pictures ,
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as Fred Cromwell
as Bill 'Jellybean' Cook
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