For this double cross over episode, the Research Unit is once again teaming up with Prosecutor Alice Nevers and Commander Marquand to investigate a series of murders between Nice and Paris. The situation becomes complicated when Commander Jeanne Lorieux finds herself involved in the affair.
Elenco: Xavier Deluc , Chrystelle Labaude , Franck Sémonin , Félicité Chaton , Kamel Belghazi , Virginie Caliari , Jean-Pascal Lacoste , Manon Azem , Stéphane Soo Mongo , Raphaèle Bouchard , Félicité Du Jeu , Bernard Montiel , Vincent Primault , Dorcas Coppin , Honorine Magnier , Elise Tielrooy , Marie Piton , Julie Fournier , Elodie Hesme , Linda Hardy , Christian Vadim , Marine Sainsily , Valérie Kaprisky , Julien Courbey , Julie Bernard .