Although the BEI has accumulated a great deal of evidence, new information will muddy their waters and the course of the investigation.

Two things link the victims found on Île Notre-Dame: being a police officer and leaving a suicide note after their disappearance.

The media are aware of the circumstances surrounding Poupart's death. Corbeil discovers Philippe Laberge's dark secret.

A suspect is taken into custody. Geneviève interrogates him for many hours. Will they finally find the culprit?

The truth creates a real shake-up in the lives of Laurence and Geneviève. At a crossroads, the two women will have to make decisions.