Unorthodox detective Jean Lavardin is called to a provincial French town after a prank turns deadly.
Jean Poiret
as Inspecteur Jean Lavardin
Stéphane Audran
as Madame Cuno
Michel Bouquet
as Hubert Lavoisier
Lucas Belvaux
as Louis Cuno
Jean Topart
as Docteur Philippe Morasseau
Pauline Lafont
as Henriette
Caroline Cellier
as Anna Foscarie
Josephine Chaplin
as Delphine Moreasseau
Andrée Tainsy
as Marthe
Jean-Claude Bouillaud
as Gérard Filiol
Jacques Frantz
as Alexandre Duteil
Dominique Zardi
as Henri Rieutord, Chef de Poste
