Title : The Fontbrune Mystery - Daniel Dupuy - book
Summary :
Young architect Paul Clairval is invited to the birthday of the Count of Fontbrune, his great-uncle, whom he has never seen. At eighty years old, the still-vigorous notable is preparing to consolidate his fortune in an ambitious tourist infrastructure project. That's why he spares no expense to make this unprecedented family gathering a memorable celebration. And memorable it will be, but not in the sense he intended. A series of murders and disappearances disrupts the festivities. Paul Clairval then joins forces with Florence Caron, the still-inexperienced police commissioner dispatched to the scene, to lead the investigation.