The film is a 125-minute, black-and-white biography of French priest and diplomat Charles Maurice de Talleyrand-Périgord (1754–1838), who served for 50 years under five different French regimes: the Absolute Monarchy, the Revolution, the Consulate, the Empire, and the Constitutional Monarchy. Its title comes from one of the main historical nicknames for Talleyrand, that he shares with demon king Asmodeus and English poet Lord Byron.
Sacha Guitry
Lana Marconi
Émile Drain
Daniel Ceccaldi
Jeanne Fusier-Gir
Pauline Carton
Renée Devillers
Catherine Fonteney
Maurice Schutz
Henry Laverne
Maurice Teynac
Philippe Richard
Georges Spanelly
Georges Grey
José Noguéro
Maurice Escande
Jean Debucourt
Pierre Bertin
Roger Gaillard
André Randall
Howard Vernon
Jacques Varennes
José Torres
Denis d'Inès
Jean Piat
André Brunot
Anne Campion
Renée Bouzy
Georges Bréhat
Robert Dartois
Jeanne Daury
Dominique Davray
Max Dejean
Philippe Derevel
Bernard Dhéran
Françoise Engel
Robert Favart
Catherine Fonteney
Robert Hossein
Yvonne Hébert
Pierre Lecocq
Michel Lemoine
Simone Logeart
Sophie Mallet
Michel Nastorg
Georges Rivière
Robert Seller
Léon Walther