That's just what private detective Georg Wilsberg needed: Alex's father has announced his visit and wants to know what progress his daughter's university career is making. Alex has "briefly interrupted" her law studies and wants to earn a living in another way.

Joachim Rehmer, the head of the Münster building regulations office, is found dead on a railway track. Everything points to suicide, but his wife does not believe it was a suicide and hires the Münster private detective Wilsberg, who immediately begins the investigation.

The headstrong investigator Georg Wilsberg meets Katharina again, his great love from school days. While he himself occasionally struggles to make ends meet, she is now happily married to her husband Matthias, mother of two children and owner of a magnificent city villa. Wilsberg is plagued by self-doubt: Has he made the right decisions in his life?

This time, the case seems very simple for the unorthodox private investigator: A young woman, Susanne Diepenbrock, commissions Georg Wilsberg to search for her missing sister Jessica. She suddenly disappeared and she cannot give a reason. But things are different with Wilsberg's best friend Manni.

Wilsberg in trouble: Tax inspector Ekki Talkötter has set up shop in the antiquarian bookshop and is making life difficult for Wilsberg.

The largest painting company in the city, Schlacke, undercuts almost every price offered by its competitors. Does the company employ illegal workers? Wilsberg is tasked with finding out.

Wilsberg is on his way home. Suddenly a young girl on her bike appears in the headlights. She slams on the brakes and there's a loud crash, but luckily no one is seriously injured.

Wilsberg had an accident and had to undergo an operation. This meant that he was confined to his sick bed, but his instinct for crime was by no means paralyzed.

Wilsberg is supposed to look after many pretty girls at a beauty contest. Someone is after one of the models and has evil plans.

Attacks in Münster caused uproar in the church. The grave of a gardener was broken into. His bones were placed in the famous Anabaptist cages at the Lamberti Church.