Hidden Enemy

Hidden Enemy is a 1940 American thriller film directed by Howard Bretherton and starring Warren Hull, Kay Linaker and Wilhelm von Brincken.

Plot
A newspaper reporter encounters a gang of German spies attempting to steal industrial secrets.

Cast

 * Warren Hull as Bill MacGregor
 * Kay Linaker as Sonia Manning
 * Wilhelm von Brincken as Professor Werner
 * George Cleveland as John MacGregor
 * Fern Emmett as Aunt Mary
 * Edward Keane as Newspaper Editor
 * Willy Castello as Eric Bowman
 * John Sheehan as Marden
 * Herbert Corthell as Pete
 * Vince Rush as Gruen
 * Tristram Coffin as Newspaper Reporter
 * I. Stanford Jolley as German Agent
 * Paul Newlan as German Agent
 * Hans Wollenberger as Mueller