Picpus is a street and a subway stop where a number of murders have been committed. Maigret tries to find the killer.
Maigret
Berthe
Mascouvin
Lucas
Louis Dubief
Maître Laignan
Le Cloaguen
Le grand patron
Amadieu
Le docteur Pierre
La soeur de Le Cloaguen
Madame Le Cloaguen
Le petit employé (uncredited)
(uncredited)
(uncredited)
(uncredited)
Le clerc (uncredited)
Le coursier (uncredited)
(uncredited)
Jacques (uncredited)
Madame Cognet (uncredited)
Le peintre (uncredited)
(uncredited)
(uncredited)
(uncredited)
(uncredited)
Marie, la bonne (uncredited)
Un inspecteur (uncredited)
Le garçon du buffet (uncredited)
Madame Bertaud (uncredited)
La patronne de l'hôtel (uncredited)
Bouffartigues (uncredited)
Eliane (uncredited)
La concierge de Jeanne Dumont (uncredited)
