On October 11, 2005, the quiet town of Chazay-d’Azergues in France is shattered by a gruesome discovery. Marine Boisseranc, a promising 20-year-old student, is found dead in her home. Her father stumbles upon the horrific scene, finding Marine’s body hidden behind the sofa, riddled with stab wounds. This shocking event marks the beginning of a complex investigation clouded with uncertainty and fear.

The police scramble to piece together the puzzle but find themselves hindered by the scarcity of evidence. A Nike shoe print and a cryptic phone call to a mechanic hint at a male presence, yet the trail quickly grows cold. Despite extensive searches, Marine’s mobile phone remains missing. No sign of forced entry suggests a chilling possibility: the killer might have been someone she knew. As time passes, the lack of progress frustrates both the investigators and Marine’s grieving family.
The list of suspects includes a prowler, the infamous Stéphane Moitoiret and Noëlla Hego, and Marine’s ex-boyfriend. However, none are definitively linked to the crime. As of 2021, a renewed call for witnesses offers a glimmer of hope, but the case remains unsolved. Marine’s father continues to fight for justice, refusing to let his daughter’s story fade into obscurity. The haunting question lingers—who took Marine’s life, and why?