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Marquise D'Eon, der Spione der Pompadour (1928) was the full German title of this costume melodrama. Liane Haid stars as the eponymous heroine D'Eon, who in male disguise goes to the court of Russia on behalf of Parisian courtesan Pompadour (Countess Esterhazy), to find out Czar Paul's (Fritz Kortner) intentions towards France's King Louis XV (Alfred Gierasch). It turns out that the demented Czar has gone out of control, and that all sorts of intrigues are festering and fomenting in the Russian imperial court. Gradually, the tide turns against Paul, culminating in his assassination. Meanwhile, D'Eon finds romance in the person of English nobleman Lord Hatfield (Dene Morel).