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Romy Schneider as Katia |
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Curd Jürgens as Czar Alexander II |
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Pierre Blanchar as Koubaroff |
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Antoine Balpêtré as Kilbatchich |
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Françoise Brion as Sophie |
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Monique Mélinand as Tsarina Maria |
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Michel Bouquet as Bibesco |
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Bernard Dhéran as Stéphane Ryssakov |
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Margo Lion as Institut Supervisor |
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Jacqueline Marbaux as Mlle Trépeau |
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Yves Barsacq as Katourine |
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Alain Saury as Soloviev |
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Senta Berger as Court Lady |
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Hans Unterkircher as Paskievitch |
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Marcel d'Orval as |
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Yves Gladine as |
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Hubert Noël as Michel Dolgorouki |
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Gabrielle Dorziat as |
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Liliane Chenevière as (uncredited) |
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Danièle Dali as (uncredited) |
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Germaine Delbat as (uncredited) |
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Françoise Deldick as (uncredited) |
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Helene Lauterböck as (uncredited) |
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Robert Le Béal as (uncredited) |
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Jacques Mancier as (uncredited) |
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Paul Mercey as (uncredited) |
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Pierre Moncorbier as (uncredited) |
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Sophie Poncin as (uncredited) |
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László Szabó as (uncredited) |
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Victor Tabournot as (uncredited) |
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Monique Tarbès as (uncredited) |
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Irène Tunc as (uncredited) |
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Egon von Jordan as (uncredited) |
| Directing | Robert Siodmak | Director |
| Writing | Charles Spaak | Writer |
| Writing | Marthe Bibesco | Novel |
| Writing | Georges Neveux | Writer |
| Sound | Joseph Kosma | Original Music Composer |
| Production | Michel Safra | Producer |
| Camera | Michel Kelber | Director of Photography |
| Editing | Louisette Hautecœur | Editor |
| Editing | Henri Taverna | Editor |
| Art | Jean d'Eaubonne | Art Direction |
| Costume & Make-Up | Rosine Delamare | Costume Design |
