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.

Cast:William Hall, Jane Wyman, Esther Ralston, Robert Warwick, Leon Ames, Ben Alexander,

Genre:Adventure, Crime, Drama, Mystery, Romance,

country:United States of America,

Production:Universal Pictures,