Cast
- Kurt Nachmann as Kommissar Ledersteger
- Christine Kaufmann as Fanny Elßler
- Hans Holt as Hofrat Gentz
- Rudolf Prack as Graf Richemont
- Alfred Böhm as Czermak II.
- Edwin Noël as Herzog von Reichstadt
- Olga Tschechowa as Gräfin Latour
- Anaid Iplicjian as Gräfin Adriani
- Petra Schürmann as Gräfin Napoleone Camarata
- Rudolf Melichar as Freiherr von Prokesch