During the weekly seance in the house of blind Jennifer Jordan, an excellent medium, one of the female visitors falls off her chair. Dead. Jennifer had felt the tension around her, the vibrations of lusts and strong emotions. Something was happening around her, something dramatic, gruesome. Is it the angry spirit of a deceased, bent on revenge, or is one of those present a murderer? Inspector DeKok looks for the murderer among the living, because, he says: "Dead people are in heaven, or in hell, and I've never yet seen a murderer come from either direction."