Jany Holt as Cécile

Colette Darfeuil as Louise Heller

Pierre Renoir as Doctor Dauvel-Juste

Jacques Baumer as Commissioner Hyacinthe

Jean-Jacques Delbo as Ludovic

Pierre Larquey as Mr. Thiais

Jean Tissier as De Thomaz

Jacqueline Delubac as Mrs. de Lanier

Charles Dechamps as Lecartier

Marguerite Deval as Mrs. Chapuis

Jean-Max as Nick Jumeau

Jean Servais as Stadler

Jean Martinelli as Moncey

Antonin Berval as Inspector Vignolles

Alexandre Rignault as Jeuniot

Annette Poivre as Marthe Belair

Marcel Pérès as Bonvallet

Margo Lion as Olympe de Stadler

Max Maxudian as Prefect

Henri Charrett as Inspector Poignant

Madeleine Suffel as Madame Barbe

Gisèle Gray as

François Joux as

Marc Arian as

Geneviève Kervaingant as

Jacques Henley as Malmandier

Pierre Juvenet as

Odette Barencey as

Daniel Mendaille as

René Stern as

Luong Van Yen as

Philippe Janvier as

Georges Adlin as

Renée Barell as

Jacques Dynam as Pierre

Renée Bartout as

Elisa Ruis as Jacqueline

Jacques Famery as Achille Terrigny

Héléna Manson as Elise Bonvallet

Pierre Jourdan as Inspector Wens

Arielle as (uncredited)

Émile Genevois as (uncredited)

Jean Landier as (uncredited)

Annie Rouvre as Madame Moncey (uncredited)

Titys as (uncredited)