Chicken with Vinegar (Poulet au vinaigre)

When a small town begins losing its citizenry in a series of grisly murders, out-of-town police inspector Jean Lavardin (Jean Poiret) is sent to investigate. Could the killers be a bullied son (Lucas Belvaux) and his cruel mother (Stephane Audran) who run the local post office? Or a pushy trio of would-be land developers? This Claude Chabrol thriller is the first of two films featuring Inspector Lavardin.