Guest Stars Pierre Cévaër as Bournazel - Assistant Bertillon 1 Nicolas Bouchaud as Maître Weidmann Benoît Tachoires as Chandrot - Inspecteur Thibaud Gitton as Berthier - Inspecteur William Rageau as Assistant Bertillon Gaëtan Peau as Guichard - Inspecteur des Moeurs David Lelièvre as Assistant Bertillon 3 Mathilde Mery as Cécile Jouin Bastien Ughetto as Norbert Dubreuil Johann Cuny as Félicien - l'Inconnu du Bois de Boulogne Noé Besin as Jeune homme élégant cabinet Verlot Christophe Kourotchkine as Père Fleury Thierry Barbet as Médecin suicide Adolphe Lou Deleuze as Gamine qui chante