Wolfs and Eva are faced with a very unusual case. In a beautiful large house where former students from Delft have returned to live together after their retirement, one of the residents is shot dead in his room. The strange thing is that all the other residents were sitting together at the table at the time of the murder. So they couldn't have done it. There is a trail leading to the garden, but the gardener who was working at the time did not see anything unusual. Wolfs and Eva rack their brains trying to figure out who could have committed the murder and, more importantly, how. Romeo and Marion are searching for a missing Belgian boy. His very Christian mother is extremely worried, because her son is not used to wandering around alone in a big city like Maastricht.

Wolfs and Eva are confronted with ruthless criminals who have their sights set on a jewelry store. They take the sick daughter of an employee hostage, who lets them in and gives them access to the safe. The men make off with a large amount of expensive jewelry. But thanks to Wolfs and Eva's alertness, they manage to catch one of the perpetrators before he can escape via the airport. They interrogate the man, Serge, but he doesn't budge and even laughs at them. The next day, it becomes clear why. His accomplices have kidnapped the sick girl again during the night and threaten to kill her if Serge is not released that same day. While everyone is searching for the girl's whereabouts, Wolfs and Eva have no choice but to let Serge go. Together with Mechels and Bols, they devise a daring plan to find the girl and recapture Serge. Meanwhile, Marion and Romeo are dealing with a foundling who was discovered at the church. Further investigation reveals that this is not the first time this has happened.