Humble stamp dealer Otto Becker has little to do with international politics, so when he receives a surprise visit from his estranged twin brother and Nazi spy, Baron Hugo von Detner, his world is thrown into turmoil. Threatening Becker with deportation, Hugo forces him to use his shop as a front for espionage.
Conrad Veidt
Otto Becker / Baron Hugo von Detner
Ann Ayars
Kaaren De Relle
Frank Reicher
Fritz
Dorothy Tree
Miss Harper
Ivan F. Simpson
Professor Sterling (as Ivan Simpson)
William Tannen
Ludwig
Martin Kosleck
Kurt Richten
Marc Lawrence
Joe Aiello
