Leon Ames, Charlotte Wynters, Adrienne Ames, Richard Loo, Weldon Heyburn, Abner Biberman, Philip Ahn, Don 'Red' Barry, Frank Darien, Gerald Mohr, Sidney Miller, Wilhelm von Brincken, Hugh McArthur, J. Scott Smart, Paul McVey
A U.S. agent attempts to track down a spy ring working to destroy the Panama Canal.