Munchausen's shock

A special education teacher lies dead in her mobile home at the Rühle campsite. KHK Emma Stanford does not believe that Caroline Merker took her own life. For example, a suicide note is missing and two rinsed champagne glasses don't exactly speak for it either. Emma investigates and comes across a woman who plots against pretty much everyone in her path. In the process, Emma digs up a case from the past: Five years ago, there was a serious confrontation at the learning support school in which a boy died. Caroline Merker had made a serious mistake. Much too slowly, the policewoman realises that this case has nothing to do with Merker's death. She is running out of time. Then Emma has the decisive idea when she watches a man collapse in a gym. Now she is one decisive step ahead of the perpetrator. She knows the real cause of death. Emma puts all the pieces of the puzzle together and can prove who is behind the murder. But first she has to take her friend Barbara out of the killer's line of fire ....