A half-naked, abused student is found in the city. She is terribly confused, but Eva and Wolfs quickly realize that she has been raped. Eva fears that a rapist who terrorized the area a few years ago is active again. After analyzing the rapist's signature and the evidence found, it appears that she is right. Chief Inspector Hoeben decides to set a trap, and Eva volunteers to be the target for the perpetrator. Wolfs is put in charge of the operation. The trap seems to work; a man who attacks Eva is arrested. Meanwhile, Romeo and Daan go to a known drug den after receiving complaints about noise pollution. There they find Fleur unconscious. She has taken an overdose. Romeo immediately informs Wolfs, who rushes to the hospital. He abandons the operation to catch the rapist. Then Eva discovers that the arrested man is not the rapist.

During a tour of the Maastricht casemates, the future son-in-law of Uncle Will, a well-known financial genius who invests a lot of money for the happy few in Limburg, disappears. A massive search is launched, but to Wolf and Eva's surprise, the young man has vanished from the casemates. Hoeben doesn't immediately see this as a case, until it turns out that the boy had an appointment with the police on the day of his disappearance. Uncle Will knows what that was about: the boy had swindled him. Uncle Will had agreed with him that he would turn himself in and return the money, but now it appears that he has run away. When Will's much younger wife also disappears, the picture seems complete: the boy and the woman have run off with Will's money. Will and his daughter are inconsolable. Can Wolfs and Eva find the two? Daan has his first case as a detective; a girl has reported the theft of her expensive iPhone. A ghost from Eva's past reappears when she finds a small portion of the money that was in the explosive suitcase in the Ponti's kitchen.