At the end of a conference held out on an open square for members of the police force, Chloe is approached by Marianne Garnier, who begs her to investigate into the circumstances of the death of her 17-year old son Baptiste. Chloe is surprised by this request, until she learns that the high school student died 21 years ago, and if no new crime evidence is found within the next 48 hours, statutes of limitation will close the case. Every minute counts. Working from a mysterious photo recently found by the victim’s mother, the team investigates at the prestigious …