Léon Raiter as Le détective Léon...Tout court...

Olga Valéry as Jeanne Thermidor

Josette Day as La secrétaire d'Oeil-de-Lynx

André Deed as Eugène, vieux régisseur des Folies Impériales

Henri Debain as Le speaker

Albert Huard as

William Burke as

Gaston Orbal as

Denise Pâques as

Marcel Barencey as

Odette Barencey as