The Squad decides to meet the villagers who have received threatening letters. Lamontagne considers that the investigation is not progressing quickly enough for his liking and he makes hasty decisions, but Stéphanie thinks he is going the wrong way.

The atmosphere is increasingly heavy and a climate of suspicion is established in the Brigade. Pelletier can no longer hold still, he wants to save Cindy. With Lily-Rose and Renaud, they try to convince Stéphanie to intervene as quickly as possible.