Gangsters from the United States try to kill a key government witness whose testimony could help land an influential mobster in jail. It's up to detective Maigret to deal with the FBI and a series of underworld figures to save the life of the witness...
as Commissioner Jules Maigret
as Lily
as Cicero
as Bonfils
as l'inspecteur Lognon
as la patronne de l'hôtel
as Lucienne
as l'inspecteur Torrence
as Pozzo
as Charlie
as Docteur Fezin
as Bill Larner
as Harry Mc Donald
as Bidoine
as Le garçon du 'Manhattan'
as Le pharmacien Dullac
as Un inspecteur
as Curtis
as Un inspecteur
as Un inspecteur
as L'employé des cartes grises (uncredited)
as Un inspecteur (uncredited)
as Un inspecteur (uncredited)
as Un consommateur (uncredited)
as Riquet (uncredited)
as Un inspecteur (uncredited)
as L'inspecteur Groussard (uncredited)
as Un agent (uncredited)
as Le concierge de l'hôtel
as Un inspecteur (uncredited)
as Un inspecteur (uncredited)
as Un agent du commissariat (uncredited)
as (uncredited)
as (uncredited)
as Le patron du café (uncredited)
