The GRDV reopens the case of Antoine—missing for fifteen years—after his mother claims to have seen him again recently. Esther, Frankie, and Douma investigate this unsettling reappearance, navigating doubt, uncertain leads, and buried truths. Meanwhile, Esther edges dangerously close to the truth about Mathias, while Théo pursues a lead on his own—at his own peril. Douma also discovers that Nawaz has gone missing, as Frankie faces a crucial decision regarding Boris. In a high-tension finale, events accelerate rapidly, and long-held certainties are shattered.