Hidden Enemy

Hidden Enemy
Directed by	Howard Bretherton
Written by	Charles Williams Marion Orth
Produced by	Fred Scheld T.R. Williams
Starring	Warren Hull Kay Linaker Wilhelm von Brincken
Cinematography	Harry Neumann
Edited by	Robert Golden Russell F. Schoengarth
Music by	Edward J. Kay
Production company	Monogram Pictures
Distributed by	Monogram Pictures
Release date	January 20, 1940 (1940-01-20)
Running time	63 minutes
Country	United States
Language	English

Hidden Enemy is a 1940 American thriller film directed by Howard Bretherton and starring Warren Hull, Kay Linaker and Wilhelm von Brincken.¹

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

• 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