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.

Cast

Bob Steele

Guinn 'Big Boy' Williams

Lucile Browne

Jack Mulhall

Purnell Pratt

Robert Frazer

J. Carrol Naish

Bob Kortman

Lafe McKee

Edward Hearn

Kernan Cripps

Edward Peil Sr.