The siblings Sieglinde and Siegmund von Arnstatt are inseparable. Their arrogant manner is particularly felt by Sieglinde's fiancé, Lieutenant Justus von Beckerath. Siegmund jealously watches over his sister, with whom he falls into a frenzy of emotion during a performance of Richard Wagner's opera "Die Walküre." Beckerath realizes that he will never be able to break into the incestuous intimacy of the twins. Finally, Siegmund and Sieglinde give themselves over completely to their sensual intoxication...
| Actor | Role |
|---|---|
 Elena NathanailSieglinde Arnstatt | Sieglinde Arnstatt |
 Gunther MalzacherKunz Arnstatt | Kunz Arnstatt |
 Margot HielscherIsabella Arnstatt | Isabella Arnstatt |
 Gerd BaltusLieutenant Justus Beckerath | Lieutenant Justus Beckerath |
 Michael MaienSiegmund Arnstatt | Siegmund Arnstatt |
 Rudolf ForsterCount Arnstatt | Count Arnstatt |
 Ingeborg HallsteinComtess Märit Arnstatt | Comtess Märit Arnstatt |
 Rudolf RhombergOpera Guest | Opera Guest |
 Ruth DrexelTheatre Guest | Theatre Guest |
| CChristoph QuestVon Gelbsattel | Von Gelbsattel |
 Kurt ZipsOrdonnanz (uncredited) | Ordonnanz (uncredited) |
| KKarl-Heinz PetersFlorian (uncredited) | Florian (uncredited) |
| HHeinz-Leo FischerWendelin (uncredited) | Wendelin (uncredited) |
 Michl LangDoorman (uncredited) | Doorman (uncredited) |