Jean Debucourt as Inspector Chambon

Michel Simon as Doctor Michel Ancelin

Jany Holt as Madeleine Bodin

Ariane Murator as Madame Bastard, mother of the sick girl

Georges Brehat as Aubignac

Robert Dalban as Gustave, boss of the café

Jean Wall as Doctor Dumont

Henri Charrett as Inspector Noël

Pierre Juvenet as Gillois, notary

François Joux as Lieutenant Louvet

Charles Vissières as Antique dealer

Jean Brunel as Rifardont

André Darnay as Maître Corneau

Emile Chopitel as Tournier

Christiane Delacroix as Gustave's wife

Max Tréjean as

Jean Sylvère as Friend of Doctor Ancelin (uncredited)