Riven

Albert Préjean

as Le commissaire Maigret

Santa Relli

as Cécile

Germaine Kerjean

as Madame Boynet

Luce Fabiole

as Madame Petitot, la concierge

Liliane Maigné

as Nouchi

André Gabriello

as Lucas (as Gabriello)

Jean Brochard

as Dandurand

Yves Deniaud

as Machepied

André Reybaz

as Gérard Pardon

Marcel Carpentier

as Dr. Pierre

Marcel André

as Le directeur de la P.J.

Henry Bonvallet

as Le juge d'instruction (as Henri Bonvalet)

Charles Blavette

as Monfils

France Asselin

as Hélène Pardon (uncredited)

Paul Barge

as Monsieur Louis (uncredited)

Jacques Beauvais

as Monsieur Paul (uncredited)

Fernand Blot

as Un inspecteur (uncredited)

Charles Camus

as Léopold (uncredited)

Jean Clarieux

as Voyageur dans le métro (uncredited)

Marius David

as (uncredited)

Charlotte Ecard

as L'amie de la concierge (uncredited)

Pierre Ferval

as Un gendarme (uncredited)

Eugène Frouhins

as Le serrurier (uncredited)

Gustave Gallet

as Le médecin (uncredited)

Alice Gosset

as La femme au tandem (uncredited)

Georges Gosset

as L'homme au tandem (uncredited)

Charles Lavialle

as Le raccommodeur de faïence (uncredited)

Jean Martin

as Le garçon d'étage (uncredited)

Marcel Melrac

as Le chauffeur de taxi (uncredited)

Geneviève Morel

as Une amie de Madame Petiot (uncredited)

Julienne Paroli

as La femme de ménage (uncredited)

Marcel Raine

as Un complice de Dandurand (uncredited)

Maurice Salabert

as Un inspecteur (uncredited)

Henri Vilbert

as Un inspecteur (uncredited)

Maurice Tourneur

Director

Roger Dumas

Original Music Composer

Georges Simenon

Novel

Michel Duran

Dialogue

Gérard Bensdorp

Editor

Jean-Paul Le Chanois

Adaptation

Pierre Montazel

Director of Photography

Georges Leblond

Sound

Guy de Gastyne

Production Design