as Le commissaire Maigret

as Cécile

as Madame Boynet

as Madame Petitot, la concierge

as Nouchi

as Lucas (as Gabriello)

as Dandurand

as Machepied

as Gérard Pardon

as Dr. Pierre

as Le directeur de la P.J.

as Le juge d'instruction (as Henri Bonvalet)

as Monfils

as Hélène Pardon (uncredited)

as Monsieur Louis (uncredited)

as Monsieur Paul (uncredited)

as Un inspecteur (uncredited)

as Léopold (uncredited)

as Voyageur dans le métro (uncredited)

as (uncredited)

as L'amie de la concierge (uncredited)

as Un gendarme (uncredited)

as Le serrurier (uncredited)

as Le médecin (uncredited)

as La femme au tandem (uncredited)

as L'homme au tandem (uncredited)

as Le raccommodeur de faïence (uncredited)

as Le garçon d'étage (uncredited)

as Le chauffeur de taxi (uncredited)

as Une amie de Madame Petiot (uncredited)

as La femme de ménage (uncredited)

as Un complice de Dandurand (uncredited)

as Un inspecteur (uncredited)

as Un inspecteur (uncredited)