The detective Richard and his assistant Gilbert are sent to a small village plagued by a series of extraordinarily gruesome murders. When they arrive, the village seems abandoned, because most of its inhabitants have left it days before. The investigations get off to a slow start, because neither the terrified villagers nor the two detectives can find any explanation for the murders executed in such an extraordinary manner. Not only did the victims have literally every bone in their bodies broken, their disfigured bodies also show numerous bite marks, which are, however, limited to the face and arms. Apart from the traces of hooves from several horses, there are no further clues at the crime scenes that could point to the perpetrator. The two detectives are faced with a seemingly unsolvable mystery. Were the sharply edged, extraordinarily large bite marks on the victims possibly inflicted by animals? While Richard believes vehemently in a human perpetrator, Gilbert increasingly thinks there is something else behind these strange murders than they initially thought.