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: Adventure, Crime, Drama, Mystery, Romance
Cast: William Hall, Jane Wyman, Esther Ralston, Robert Warwick, Leon Ames, Ben Alexander, Don Barclay, Egon Brecher, Paul Sutton, Jack Mulhall, LeRoy Mason, Harry Woods, Phillip Trent
Crew: George Waggner (Screenplay), Francis Van Wyck Mason (Story), Harry Neumann (Director of Photography), Joseph H. Lewis (Director)