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