"A mysterious figure signing himself "The Ferret" keeps sending letters to the police, tipping them off about murders that are to be committed around Paris. Among those caught up in the police manhunt is a fraudulent clairvoyant."
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
Marc Arian
Geneviève Kervaingant
Jacques Henley
as Malmandier
Pierre Juvenet
Odette Barencey
Daniel Mendaille
René Stern
Luong Van Yen
Philippe Janvier
Georges Adlin
Renée Barell
Jacques Dynam
as Pierre
Renée Bartout
Elisa Ruis
as Jacqueline
Jacques Famery
as Achille Terrigny
Héléna Manson
as Elise Bonvallet
Pierre Jourdan
as Inspector Wens
Arielle
as (uncredited)
Émile Genevois
Jean Landier
Annie Rouvre
as Madame Moncey (uncredited)
Titys
Raymond Leboursier
Director
Scenario Writer
Stanislas-André Steeman
Novel