A corpse clutching a crystal chess piece is found in the old fortress of Bitche.
Lilly-Fleur Pointeaux
Stéphane Bern
Joffrey Platel
Féodor Atkine
Catherine Demaiffe
Francis Renaud
Marie Matheron
Céline Jorrion
Hervé Sogne
Yannig Samot
Rafaël Rajabian
Manuel Gélin
Ahmed Ferhati
Bruno Dreyfürst
Florent Pochet
Xavier Boulanger
Marie Seux
Roch Leibovici