Cerebrum

Back from Asia, Henri contacts Simone, who investigates the murders of young women, to discuss the trial of Sophie Bérubé-Lacroix. Sober for 4 months, Jules Côté does not get the hoped-for encouragement from his mother. A strange individual makes contact with Jules and takes advantage of his fragility. Back at the National Institute of Mental Health (INSM), Henri witnesses an encounter that deeply shocks him.

Henri resumes work at INSM and meets Nicolas Therrien, a content moderator struggling with spontaneous panic attacks. Simone and Danno suspect Jules Côté of wishing harm to Dr. Lacombe. Investigator Vallier advises Henri to hire a bodyguard. Jules, distraught, searches his entourage for who could be hiding behind the mysterious Angel.

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.

Simone and Danno's investigation stalls. Henri goes on his first date with Francine. William sees Laure again, which troubles him. Jules ends up obeying Angel. Pierre informs Henri and Dr. Riendeau of his concern about Jules. The two psychiatrists clash over Riendeau's participation in the trial as an expert witness. Diane returns apparently radiant from her vacation.

Paule Lachapelle, who has lost all inhibitions, makes quite a scene when her daughter Maryse takes her to INSM. William enlists Marine's help to make a difficult announcement to his father. Henri confides in his psychologist, Henri-Martin Chabot. However, the insistent attitude of the latter on the investigation intrigues Henri. Simone can't get Jules out of the potential suspects.

Simone investigates Henri-Martin Chabot by involving Henri in a scheme. The psychiatrist tries to help Diane and Lorraine accept to love each other as they are. Not wanting to commit too quickly, Henri neglects his relationship with Francine, who seems excited. Jules, completely devastated, finds himself on the street and only Pierre manages to bring him home. Jules decides to confess everything.

Everyone is relieved that the "murderer" has been arrested. However, Henri is not sure that we have caught the right person. Christian advises Henri about Francine. Adèle no longer gives Simone any news. Henri tries to mend the broken pots with William. At work, the psychiatrist announces bad news to Paule and Maryse. The trial of Sophie Bérubé-Lacroix finally begins.

Devastated by everything that is happening to her, Simone nevertheless embarks with Danno on a frantic manhunt. Will the duo manage to neutralize the one who has thwarted them from the start? At the trial of Sophie Bérubé-Lacroix, the expert for the prosecution is impeccable, which gives hope to Henri. The defense testimony is also very convincing. Which way will the scales of justice tip?