On 5th September 2012, in a small mountain parking lot in the Alps, a British vacationing family and a local cyclist were found murdered. This marks the beginning of what would become one of the most far-reaching and mysterious criminal cases of recent decades in Europe. While the victims appear to have no notable history, French and British investigators quickly uncover a complex and increasingly perplexing reality.
| Writing | Imen Ghouali | Screenplay |
| Production | Sébastien Deurdilly | Producer |
| Production | Johan de Faria | Producer |
| Directing | Camille Bovier Lapierre | Director |
| Editing | Romain Vitiello | Editor |
| Camera | Stéphane Bion | Director of Photography |
| Directing | Imen Ghouali | Director |
| Writing | Brendan Kemmet | Screenplay |
| Sound | Mathieu Artu | Music |