Cast
Jacques Dufilho
Albert, manservant
Roger Dumas
Isidore Bautrelet aka 'Véritaz'
Gisèle Grandpré
Madame du Bois-Lambert
Ginette Pigeon
Agnès, nurse
Michel Vocoret
René Hell
Prison guard (uncredited)
René Lefèvre-Bel
(uncredited)
Robert Lamoureux
Arsène Lupin / Lieutenant André Laroche
Jean Galland
General
Paul Müller
Attaché of the French consulate in Florence
Gabriel Gobin
SNCF employee (uncredited)
Judith Magre
(uncredited)
Paul Préboist
Drunkard of Enghien (uncredited)
Paul Villé
Secretary of the archives (uncredited)
Alida Valli
Aurélia Valéano
Yves Robert
La Ballu
Hubert de Lapparent
French Consul in Florence
Jean Bellanger
Sleeping car employee
Michel Etcheverry
Van Nelden, collector
Pierre Duncan
(uncredited)
Robert Dalban
Inspector Béchoux of the Judicial Police
Harold Kay
Henri
Gérard Darrieu
Sidekick
Robert Rollis
Traveler on the train (uncredited)