Albert Préjean

Maigret

Juliette Faber

Berthe

Jean Tissier

Mascouvin

André Gabriello

Lucas

Noël Roquevert

Louis Dubief

Guillaume de Sax

Maître Laignan

Édouard Delmont

Le Cloaguen

Antoine Balpêtré

Le grand patron

Henri Vilbert

Amadieu

Pierre Palau

Le docteur Pierre

Gabrielle Fontan

La soeur de Le Cloaguen

Colette Régis

Madame Le Cloaguen

Jean-Marie Boyer

Le petit employé (uncredited)

Albert Brouett

(uncredited)

Henri Charrett

(uncredited)

Raymond Dardelin

(uncredited)

Jean Dasté

Le clerc (uncredited)

Jean Daurand

Le coursier (uncredited)

France Delahalle

(uncredited)

Jacques Denoël

Jacques (uncredited)

Marguerite Ducouret

Madame Cognet (uncredited)

Marcel Duhamel

Le peintre (uncredited)

Pierre Ferval

(uncredited)

Fabienne Fortaire

(uncredited)

Édouard Francomme

(uncredited)

Georges Gosset

(uncredited)

Héléna Manson

Marie, la bonne (uncredited)

Maurice Marceau

Un inspecteur (uncredited)

Frédéric Mariotti

Le garçon du buffet (uncredited)

Maximilienne

Madame Bertaud (uncredited)

Marcelle Rexiane

La patronne de l'hôtel (uncredited)

André Varennes

Bouffartigues (uncredited)

Huguette Vivier

Eliane (uncredited)

Janine Viénot

La concierge de Jeanne Dumont (uncredited)

Richard Pottier

Director

Jean-Paul Le Chanois

Adaptation

Georges Simenon

Novel