An important incident happens to Henri and makes him realize that the threat is very real. Richard Lacroix tries to bring his daughter Sara home. Henri finally tells Richard about his affair with Anne. Angel continues to manipulate Jules with the most sordid schemes. Henri receives a confidence from his patient Nicolas, which confronts him with his own wounds.

As Angel continues to terrorize Jules, Simone and Danno raid Jules' apartment. At the INSM, Henri sees Diane Ricard again, who has received an unexpected invitation, and he visits Xavier Mercier, who has been disfigured by a suicide attempt. The psychiatrist makes a risky proposition to the young man. Inadvertently, Simone reveals sensitive information about Marine to Henri.

Simone investigates a new murder, and Henri does not believe that Jules is the murderer she is looking for. Accompanied by Henri, Xavier meets Dr. Aberdeen. Nicolas' condition is getting worse, and the psychiatrist tries to help him recognize it. Jules can no longer take the manipulations of Angel – who orders him to be murdered – and tries to get rid of this twisted mentor.