[1] Based on a real-life incident, an idealistic and dedicated magistrate is assigned to examine the case of two policemen and their inspector who have beaten a suspect to death.

In Provence just before Christmas, a former prisoner suspected of robbery is dragged from his home by two policemen, taken to the police station, and beaten to death.

Both the two policemen and the inspector on duty deny any wrongdoing, as does the one other policeman in the station and two men then in custody, all of them claiming that the death was an accident, perhaps a heart attack.

His son has had marijuana planted on him while his girl friend, an Italian antiques dealer, has been sold a stolen object and faces deportation.

Despite the efforts of the presiding judge to get witnesses to tell the truth, the trial is a foregone conclusion and the three guilty men are acquitted.