 |
Robert Lamoureux as Arsène Lupin / Lieutenant André Laroche |
 |
Robert Dalban as Inspector Béchoux of the Judicial Police |
 |
Alida Valli as Aurélia Valéano |
 |
Jacques Dufilho as Albert, manservant |
 |
Yves Robert as La Ballu |
 |
Roger Dumas as Isidore Bautrelet aka 'Véritaz' |
 |
Hubert de Lapparent as French Consul in Florence |
 |
Jean Bellanger as Sleeping car employee |
 |
Liliane Chenevière as |
 |
Michel Etcheverry as Van Nelden, collector |
 |
Jean Galland as General |
 |
Gisèle Grandpré as Madame du Bois-Lambert |
 |
Harold Kay as Henri |
 |
Paul Müller as Attaché of the French consulate in Florence |
 |
Ginette Pigeon as Agnès, nurse |
|
Anne Valon as |
 |
Michel Vocoret as |
 |
Gérard Darrieu as Sidekick |
 |
Pierre Duncan as (uncredited) |
 |
Gabriel Gobin as SNCF employee (uncredited) |
 |
René Hell as Prison guard (uncredited) |
 |
René Lefèvre-Bel as (uncredited) |
 |
Judith Magre as (uncredited) |
|
Claude Mercutio as (uncredited) |
 |
Paul Préboist as Drunkard of Enghien (uncredited) |
 |
Robert Rollis as Traveler on the train (uncredited) |
 |
Paul Villé as Secretary of the archives (uncredited) |
| Directing | Yves Robert | Director |
| Production | Mario Gabrielli | Producer |
| Production | Hubert Mérial | Unit Production Manager |
| Production | Jean Le Duc | Producer |
| Sound | Georges van Parys | Music |
| Costume & Make-Up | Georgette Fillon | Costume Design |
| Production | Alain Poiré | Producer |
| Editing | Gilbert Natot | Editor |
| Costume & Make-Up | Michel Deruelle | Makeup Artist |
| Production | Jules Borkon | Executive Producer |
| Production | François Chavane | Executive Producer |
| Production | Moris Ergas | Executive Producer |
| Art | Robert Clavel | Production Design |
| Costume & Make-Up | Simone Knapp | Hairstylist |
| Directing | Mary Greco | Third Assistant Director |
| Directing | Georges Casati | First Assistant Director |
| Camera | Jean-Marie Maillols | Camera Operator |
| Camera | Charles-Henri Montel | Camera Operator |
| Camera | Jean Magis | Still Photographer |
| Sound | Renato Cadueri | Sound |
| Production | Robert Sussfeld | Production Manager |
| Sound | Robert Biard | Sound Recordist |
| Camera | Roland Paillas | Assistant Camera |
| Directing | Jacques Besnard | Second Assistant Director |
| Camera | Maurice Barry | Director of Photography |
| Sound | Georges van Parys | Original Music Composer |
| Writing | Maurice Leblanc | Writer |
