In a serious case of drug-related crime in a block of flats in Cologne, the police have long been investigating in vain. The situation worsens when a teenage girl is in a coma after taking drugs - the residents, who have finally lost faith in police work, take matters into their own hands and the situation finally escalates when the girl's uncle is tragically killed life comes.

The episode provides a review in which Semir reports on a critical time in his life not too long ago: The psychologist Denise Wallbusch, who he knew, had become the victim of a psychopath who masked her but had taken control of her in broad daylight.