Inspector Annelies Donckers seeks advice from her former college professor, Jasper Teerlinck, when a woman is raped at an Antwerp university campus in circumstances matching a 10-year-old cold case
Professor T is asked to assist the police again when the university's head librarian is poisoned, but Chief Inspector Rabet views this as an insult to his skills and tells Daan to keep an eye on him
The chairwoman of a school inspection team is murdered at home. At first sight it looks like a robbery gone badly wrong, but Professor T is convinced that a member of school staff is somehow involved.
When the police probe the disappearance of a law student, it soon becomes clear he had a number of secrets to hide. Daan is puzzled when Annelies behaves erratically and Rabet's drink problem worsens.
A plastic surgeon is killed in his hotel room and the police begin to search for a woman he spent the night with. But Professor T is convinced that she's innocent and starts his own investigation.
The escort who visits Professor T regularly in his apartment is found dead in her home. The police think she committed suicide but the academic hides the fact that he knows her to keep investigating.
Fifteen years ago, Commissioner Flamant solved a double murder by a killer who put masks on his victims. Now an identical crime has been committed. Is it a copy-cat or did she arrest the wrong person?
Chief Inspector Rabet gets into trouble when he's confronted with the driver who killed his daughter in a car crash. Rabet's sure the man's guilty of another crime but his colleagues aren't convinced.
The kidnapping of a six-year-old boy shocks the police team, who do everything in their power to crack the case. But Professor T questions the innocence of the child's seemingly distraught parents.
An employee is accused of killing his boss after he's found standing over the body. Annelies and her team are sure he must be guilty but Professor T wonders whether the wrong man is going to trial.
A businessman vanishes without a trace just days after a failed attempt on his life. Blood is found, yet there is no body. Is this a genuine crime or could it have been staged by the 'victim' himself?
When two bodies are found within days of each other, both with numbers carved into their chests, it seems Antwerp has a serial killer on its hands. Will Professor T resurface to help with the case?
Annelies meets the widow of the latest victim, urgently trying to find connections between the three murders. But the team are unaware that the perpetrator is closer than they could possibly imagine.