Once again false alarm for the Leipzig Kripo. The parts of an alleged woman's corpse in the container turn out to be a prosthesis. Less than half an hour later there is a dead person in the immediate vicinity. A young girl was killed in her parents' house and fell down a flight of stairs. The fatal thing about the case is that Chief Inspector Kain had just seen the girl on the street. She was involved in an argument with her boyfriend and was forcibly returned to the house by himbeen pushed. Although he had arranged for a routine check, Cain blames himself for not having intervened himself. He finds the obvious perpetrator as Martin Kubelka in a BKA file. The saliva analysis agrees with his values. For Cain, the case is clear. Without waiting for the sperm analysis, he obtains an arrest warrant from the public prosecutor. But the next day, Kubelka is free again – due to a lack of evidence.