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 ,
as Fred Cromwell
as Bill 'Jellybean' Cook
