After shooting Luca, Wolfs seems to have disappeared with the money. But then he suddenly reappears, with the suitcase. He is then suspended pending the investigation into Luca's death. While Wolfs is at home, the Maastricht police are busy. A particularly valuable Fabergé egg is on display in the city. Hoeben has arranged security. There is also a lot of commotion due to the crowds attending André Rieu's Vrijthof concerts. Marion and Romeo stop a driver who is not using a hands-free device. The driver has no intention of stopping; he floors it and drives off. When the driver is apprehended after a chase, the police find traces of explosives in the car. A list of employees and dates of André Rieu's Vrijthof concerts is also found. Is an attack being planned against him? The detectives talk to Rieu's security team and it soon becomes clear that a deranged fan has threatened to blow up Rieu.

At a boarding school, a Dutch teacher is found dead after a picnic with her favorite class. The cause of death is initially a mystery. The case becomes even more complicated when the detectives discover that the victim had assumed someone else's identity. So who is this woman? When it turns out that she died from a strange combination of hallucinogenic drugs, her ex-husband, a local pharmacist, comes into the picture. But the school principal and the girls in her class also have their secrets. Romeo and Marion encounter a quack who defrauds vulnerable patients. At least, that is the story of the person who comes to file a report. But Marion begins to have doubts when the self-proclaimed doctor manages to alleviate her symptoms, which no one else has been able to treat. Romeo informs Wolfs about Fleur's drug use.