Nazi Agent (1942)

Otto Becker, a modest stamp dealer, leads a quiet life until his estranged twin brother, Baron Hugo von Detner, unexpectedly arrives. As a Nazi spy, Hugo disrupts Otto's peaceful existence, coercing him into a dangerous game of espionage by threatening deportation. Otto is thrust into a high-stakes world of intrigue, forced to turn his shop into a cover for his brother's clandestine activities. Torn between family loyalty and his own safety, Otto must navigate the treacherous waters of betrayal and moral conflict as he grapples with his brother's sinister motives.