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.
William Hall
as Capt. Todd Hayden
Jane Wyman
as Elaine Burdette
Esther Ralston
as Jean Bruce (as Jane Carleton)
Robert Warwick
as Col. Burdette
Leon Ames
as Frank Denton
Ben Alexander
as Capt. Don Mayhew
Don Barclay
as Private Timothy O'Reilly
Egon Brecher
as General A. R. Bowen
Paul Sutton
as Charley (Spy-Ring Chauffeur)
Jack Mulhall
as Capt. Tex Randolph
LeRoy Mason
as Paul Douglas
Harry Woods
as Capt. Holden
