The Spy Ring
"Plotters Gamble Death for Anti-Aircraft Secrets!"
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.
Genres: Adventure, Crime, Drama, Mystery, Romance
Directors: Joseph H. Lewis
Writers: Francis Van Wyck Mason, George Waggner
Cast
IMDB: tt0030784