After discovering the body of an undercover police officer in the trunk of a car, the CID team blunder into a Drugs Squad operation against a major trafficker that appears to implicate one of their closest colleagues.

As a major trial gets underway, Professor T presents the case to his students--it involves a caretaker accused of shooting dead his rich employer. It seems an open and shut case, but the Professor turns expert witness to prove otherwise.

Professor T's classes are proving popular. The material he presents is like a thriller that has the students on the edge of their seats and they start flocking to his class in increasing numbers. Annelies receives confirmation that her father's euthanasia request is legally valid and that she has been named trustee. Struggling with this heartbreaking decision, she turns to John for support.

A physician, his wife and two children are found dead. It is unclear to the team which one of them was the killer of the other three and therefore which of them committed suicide. Professor T is having nightmares and suffering from hyperventilation; is this a result of his therapy? Annelies makes a shocking discovery about her father and Rabet receives startling news.

When a prominent barrister and his second wife are found shot dead in their home, the crime scene has uncanny parallels to another double murder 15 years ago – is it a copycat killing or was the wrong man prosecuted? Meanwhile Professor T wants to help but he’s in hospital with appendicitis.

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.

When an attempt is made on a billionaire businessman's life, Professor T suspects the culprit may be much closer to home than the police suspect.

Professor T is called upon to help investigate the disappearance of a six-year-old girl. Tensions rise between DI Paul Rabbit and Prof T until they finally come to blows.

Professor T becomes embroiled in a hostage situation, but his unconventional negotiating tactics do not go down well with the police.

When a blameless librarian is poisoned at a reception at the museum, Professor T is called upon to help narrow down the list of possible suspects.