This fast-paced mystery is in part based on a novel by Yves Ellena and is at least equally based on the 1943 classic Le Corbeau, which in 1951 was produced in English by Otto Preminger as The Thirteenth Letter. In this movie, someone is using a pirate radio broadcast to dish the dirt on the lives of the elite of a small French town.
Claude Brasseur
as Paul Maurier, le correspondant du journal local
Pierre Arditi
as Duval, l'inspecteur
Christine Boisson
as Agnès Deluca
Évelyne Bouix
as Françoise, la compagne de Duval
Jean-Pierre Bisson
as Le commissaire Bouthier
Roger Planchon
as M. Faber, le maire
Édith Scob
as Mme Michel, la libraire
Jean-Claude Dreyfus
as Rosati, le boucher
Bernard Bloch
as Gerfaut, l'entrepreneur
Yves Afonso
as Roustan
Greg Germain
as L'inspecteur Olivier
Michel Peyrelon
as Vinatier, l'agriculteur