1919 Eerie TalesRestaurant Waiter 1920 From Morn to MidnightSohn der Dame 1920 The Cabinet of Dr. CaligariAlan 1920 GenuineFlorian 1922 PhantomHugo Lubota 1928 Sex in ChainsAlfred 1931 Die heilige Flamme 1935 The CrusadesNicholas, Count of Hungary 1939 Confessions of a Nazi SpyHelldorf 1942 CasablancaGerman Officer with Yvonne (uncredited) 1943 Hangmen Also Die!Reinhard Heydrich 1943 Edge of DarknessGerman Co-Pilot 1943 Background to DangerGerman Officer 1943 Margin for ErrorFritz - Butler 1944 Resisting Enemy InterrogationHerr Mahler - German Red Cross Representative