Six months before his retirement from the criminal police, inspector Joss finds his colleague Gouvion dead, in a poorly faked suicide attempt. Joss loses his temper, and investigates on his own, which leads him through the bas-fond of Paris...
Director: Georges Lautner
Screenplay: Michel Audiard, Georges Lautner, Albert Simonin
Director of Photography: Maurice Fellous
Producer: Alain Poiré
Comissaire Joss, le Pacha
Nathalie Villars, la sœur de Léon
Marcel Lurat, dit Quinquin
l'inspecteur Albert Gouvion, amant de Nathalie
Marc, un inspecteur
le directeur de chez Boucheron
Arsène "le serrurier", un complice de Quinquin
Léon Brunet, le receleur