In Kiel, a man jumps into a bathing lake - and is impaled by bamboo sticks. For Borowski and Sarah Brandt it is initially not clear whether it is the act of a madman who accidentally finds his victims. Or did someone want to punish the dead? The dead man's girlfriend, Ina Santamaria, seems to play a key role in the case. She arranges brief sexual encounters with men via an Internet chat room. The dead man was one of themLover. Surprisingly, Commissioner Borowski receives administrative assistance from Sweden. Inspector Enberg is an old friend of his. The trail of a deadly case of rabies in Gothenburg leads him to Schleswig-Holstein. Both cases seem to be related. Apparently, the killer is pursuing a sinister revenge plan in which he infects his victim with rabies and then impales him. Then another murder occurs that surpasses anything that has happened up to that point.