A horrific discovery in a small town nestled high in the French Pyrenees begins to unravel a dark mystery that has been hidden for years. On an unforgiving winter morning, a group of workers discover the headless body of a horse, hanging suspended from the edge of a frozen cliff. Commandant Martin Servaz starts investigating and soon discovers a dark story of madness and revenge.
| Actor | Role |
|---|---|
 Charles BerlingCapitaine Martin Servaz | Capitaine Martin Servaz |
 Julia PiatonCapitaine Irène Ziegler | Capitaine Irène Ziegler |
 Nina MeurisseDiane Berg | Diane Berg |
 Pascal GreggoryJulian Hirtmann | Julian Hirtmann |
 Lubna AzabalElizabeth Ferney | Elizabeth Ferney |
 Anne Le NyCathy d'Humières | Cathy d'Humières |
 Robinson StéveninRaphaël Delaunay | Raphaël Delaunay |
 Robert PlagnolÉric Lombard | Éric Lombard |
 Sophie GuilleminGreta | Greta |