Two American-army officers are working on a new type of machine-gun for anti-aircraft warfare, when one of them is murdered. The other vows to get the spies that are after the invention and avenge his friend's death.


Plotters Gamble Death for Anti-Aircraft Secrets!
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William Hall
Capt. Todd Hayden

Jane Wyman
Elaine Burdette

Esther Ralston
Jean Bruce (as Jane Carleton)

Robert Warwick
Col. Burdette

Leon Ames
Frank Denton

Ben Alexander
Capt. Don Mayhew

Don Barclay
Private Timothy O'Reilly

Egon Brecher
General A. R. Bowen

Paul Sutton
Charley (Spy-Ring Chauffeur)