eines Lehrlings (with Ernst Lubitsch) 1915: Der Barbier von Flimersdorf (with Oscar Sabo) – also screenplay 1915: Berlin im Kriegsjahr (documentary film produced by Erich Pommer on commission from the Verein der Zentralstelle für den Fremdenverkehr) 1915: Carl und Carla (with Lisa Weise) 1915: Frau Annas Pilgerfahrt. Episode aus dem Wien-Berliner Leben 1914/15 – also screenplay together with , and production 1916: Sami, der Seefahrer 1916: Ein Zirkusmädel 1917: Albert läßt sich scheiden 1917: Doktor Lauffen 1917: Az elátkozott család 1917: Fabricius úr leánya 1917: Fekete gyémántok 1918: A Gazdag szegények 1918: A Szerelem bolondjai 1919: Die Himmelskönigin / Du meine Himmelskönigin (with Margarete Schön, Gustav Adolf Semler) – also screenplay The Duty to Live (1919) 1919: Prinzessin Tatjana oder Wenn ein Weib den Weg verliert The Yellow Death (1920, Part I) (with Gustav Adolf Semler, Rosa Valetti) The Yellow Death (1920, Part II) (with Ernst Deutsch, Margarete Schön, Gustav Adolf Semler) Respectable Women (1920) The Eyes of the World (1920) (with Conrad Veidt) – also screenplay together with Ruth Goetz, and production 1920: Das Götzenbild der Wahrheit 1920: Der langsame Tod / Die nach Liebe schmachten (with Lucie Höflich, Eduard von Winterstein) – also screenplay together with Ruth Goetz, production The Clan (1920) - also screenplay together with Ruth Goetz, production 1921: The House of Torment – also screenplay and production 1921: Das gestohlene Millionenrezept – also production Country Roads and the Big City (1921) / Musikanten des Lebens (with Carola Toelle, Fritz Kortner, Conrad Veidt) – also production 1921: Der Liebling der Frauen – also production 1921: Perlen bedeuten Tränen / Tragische Abenteuer des Japaners Dr. Rao (with Albert Steinrück, Aud Egede-Nissen) 1921: Unrecht Gut 1921/22: Menschenopfer (with Hans Albers) Lumpaci the Vagabond (1922) (with Hans Albers) – also screenplay Debit and Credit (1924) (with Theodor Loos, Olga Tschechowa) - also screenplay, together with Karl Figdor based on the novel by Gustav Freytag Nick, King of the Chauffeurs (1925) Upstairs and Downstairs (1925) The Alternative Bride (1925) (with Ida Wüst) The Third Squadron (1926) (with Claire Rommer, Ralph Arthur Roberts, Camilla Spira) – also screenplay together with Bobby E. Lüthge 1926: Mikoschs letztes Abenteuer – also screenplay When the Young Wine Blossoms (1927) – also screenplay, together with Max Jungk based on a story by Bjørnstjerne Bjørnson It Attracted Three Fellows (1928) (with Hans Albers, Hertha von Walther) The Duty to Remain Silent (1928) (with Gustav Fröhlich, Kurt