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.

• Universal Pictures
• William Hall
• Jane Wyman
• Esther Ralston
• Robert Warwick
• Leon Ames
• Ben Alexander
• Don Barclay
• Egon Brecher