Stephanie has to remove Dominic from the investigation because he is too emotionally involved. Hugo and Penelope feel powerless against Mia. Justine makes shocking new revelations that create tension in the new couple of Nicolas and Lucie.

Pelletier is back to help the Squad find evidence against their suspect. Information forces the police to deepen the analyzes of the samples taken from Justine's clothes. It is total consternation following the results!