 The survivor is tracked to Stockholm, and it turns out he has fled in a car that is connected to the murdered woman found in the wallow - it appears the car is owned by the real murderer.Folke Bengtsson, the killer from the first Sjöwall and Wahlöö novel "Roseanna", returns as a suspect of the murder of the woman.Hergott Nöjd is introduced as a character with a particularly appealing dry sort of humor.