As the team closes in on drug lord Mark Desmedt, John discovers that Rabet and Serge are both working with the criminal. Professor T asks Annelies to assist him with his research in determining the exact profile of a murderer.
An undercover agent is found dead in the trunk of his car. The main suspect is drug lord Mark Desmedt, but is this too obvious? It is Professor T's birthday, catalyzing his odd behavior and visions. Annelies' career comes to a crossroads.
A student at a strict Catholic boarding school is found dead in her room. At first, the team assume it is a case of erotic asphyxiation gone wrong, but could there be another explanation? Gijselbrecht and Flamant have an interesting meeting.
Professor T's classes prove popular, with students flocking to them in increasing numbers. Annelies receives confirmation that her father's euthanasia request is legally valid and that she has been named trustee.
When a woman's body is found near where her car fell into a canal, the cause of death seems clear — until it is discovered that her injuries were not caused by the accident. Annelies struggles to accept her father's deterioration.
Jitske, a girl with Down syndrome, claims she knows who murdered her mother, but doesn't want to say who did it. When Annelies shows insensitivity toward the girl, John decides it's time for her to meet his daughter, Elke.
A jeweler's family is taken hostage while he is on his way to empty the safe at his shop; an accident en route raises suspicion. Professor T goes through a rough patch after he is unable to prevent a death. An accident sends him back to the hospital.
After witnessing more of Van der Weyden's poor teaching, Professor T reaches his wits' end and comes up with a plan. Annelies realizes she can no longer take care of her father on her own and must make some tough decisions.
A series of attacks is carried out on SUVs. At the same time, pamphlets are being distributed for an anarchist student group of which Professor T was once a member. Daan's replacement, John, joins the team.
A student suffers life-threatening injuries as the result of an arson attack, and quite a few people appear to have motives for it. Dr. Gijselbrecht sends Professor T an assignment, but Professor T has other concerns.