The Spy Ring
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.
- Genre: Eventyr, Kriminalitet, Drama, Mysterium, Romantik
- Studio: Universal Pictures
- Nøgleord: spy, polo
- Cast: William Hall, Jane Wyman, Esther Ralston, Robert Warwick, Leon Ames, Ben Alexander