A Scotland investigation into the sinister Lamberton family castle, where a servant was mysteriously killed and then a doctor strangled a few nights later. The servants are wrongly suspected and the truth provokes the suicide of the real culprit.
Firmin, who returned mute from the war of 14-18, has never displeased anyone for twenty years in terms of political life where low blows, jealousy and betrayal are rife in his Provençal village. But an explosion gives him the floor.
