The Mystery Squadron 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. Details Casts Galleries Posters Title The Mystery Squadron Release Date 1933-12-21 Runtime 03 Hours 47 Minutes Genres Action Mystery Production Companies Mascot Pictures Production Countries United States of America Bob Steele... Fred Cromwell... Guinn "Big Boy" Williams... Bill 'Jellybean' Cook... Lucile Browne... Dorothy Gray... Jack Mulhall... Henry 'Hank' Davis... Purnell Pratt... Lafe Johnson... Robert Frazer... Dr. Flint... J. Carrol Naish... Collins... Bob Kortman... Bracken... Lafe McKee... Stephen Gray... Edward Hearn... Sheriff... Kernan Cripps... Tom... Edward Peil Sr.... Andrew Martin... Jack Mower... Carter... Jack Perrin... Roberts... Original Size (1280x720) Original Size (960x1440) Original Size (1262x1893)