When Tom is the victim of a serious accident, Lazare's investigation focuses on Jonas, the boy's father. Maddi shares a disturbing discovery about Tom with Sabine and Nectaire. The link to Esteban is obvious; could Jonas be linked to his death ten years earlier?

Tom's mother, Amandine, narrowly escapes an attempted murder. But the relief is short-lived: Tom has disappeared. As a snowstorm hits Murac, will the search lead to the young boy's recovery?