Damien discovers, too late, that the enemy was there, right next to him. The copycat fled with Lucy as a hostage. He agrees to release his friend if he is given the Mantis, with whom he has accounts to settle. To save his wife, will Damien be ready to sacrifice his mother?
Damien reveals his secret to Lucie and asks her to leave, convinced that she was a danger to herself and her family, so she moves to live with her friend Virginie. Thanks to his testimony, the profile of the "copycat" becomes clear: its identical reproduction of a ritual on a crime scene suggests that he was physically present at the time of the events, some 25 years ago.