Dimitri Saillan, a young man with no known priors, is found shot to death at the edge of a cemetery in Paris. Chloe and Rocher soon discover that he had been traumatized by the assassination of his sister, and disguised as a police officer, had taken the law into his own hands. Obsessed by what he saw as his mission, Dmitri spent days and nights investigating, in parallel with the police, a rape case he had witnessed. How far did the search of this inexperienced renegade go? Could a young man with no police experience have actually succeeded in getting his hands on …