This dead person almost went undetected. But the forensics confirmed: It was the burned bones of a person that were found in a fireplace on the outskirts of the city. In addition, the investigators secure the key to a hotel room in the ashes. There, the inspectors discover a supposed witness: But the intimidated and starved boy obviously doesn't understand a word. It's impossible to find out who he is. There is also no missing person report that would fit. Meanwhile, forensic pathologist Dr. Greta Leitner during her investigations to the conclusion that the male fatality had suffered numerous broken bones during his lifetime.