During the restoration works in the castle of Annecy-le-Vieux, the workers hear screams coming from the building and see a man running in flames and falling through the castle walls. He is the mayor of the town, Christian Verneuil, whose charred corpse is found by the PJ at the foot of the castle, with a broken neck and a strong smell of oil. Evidences in the building show that it is murder. Enzo Mattei, one of the volunteer workers, has a record and is the main suspect.
—mgallegog