It's market day in St Denis, a small town in the Périgord region of South West France. The locals are on the alert because inspectors are expected to make a 'surprise visit' in an attempt to enforce the unpopular and bureaucratic EU hygiene rules. But for Captain Bruno Courrèges, St Denis' Chief of Police, this particular market day turns into something far more serious.

An old man, head of a local immigrant North African family, is found viciously murdered. Suspicion falls on the son of the local doctor, but Bruno isn't so certain. He believes it to be an act of vengeance, with its motive hidden deep in France's divisive war-time past. As rumour and mistrust grow, Bruno must look beneath the surface of this normally calm community to find a brutal killer.