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.
Cécile
Louise Heller
Docteur Dauvel-Juste
Commissaire Hyacinthe
Ludovic
M. Thiais
De Thomaz
Mme de Lanier
Lecartier
Mme Chapuis
Nick Jumeau
Stadler
Moncey
Inspector Vignolles
Jeuniot
Marthe Belair
Bonvallet
Olympe de Stadler
Prefect
Inspector Poignant
Madame Barbe
Malmandier
Pierre
Jacqueline
Achille Terrigny
Elise Bonvallet
Inspector Wens
(uncredited)
Madame Moncey (uncredited)
Director
Scenario Writer
Novel