The Anniversary: Spectacular and gripping: The new tenth volume in the cult series featuring Ann Kathrin Klaasen by Spiegel bestseller author Klaus-Peter Wolf. A severed head on Wangerooge and a torso in Cuxhaven - but neither part belongs to a corpse. Her tenth case takes Chief Inspector Ann Kathrin Klaasen to the two East Frisian islands of Wangerooge and Langeoog. When the postman rings the bell at Ubbo Heide's house that morning, he brings a large package. Inside is a severed head. It is the head of a person Ubbo Heide knows. For years, he has tried to bring him to justice for his crimes, but in the end, the courts had to let him go. Then a second head is found. The crime could not be proven against this victim either. Ann Kathrin Klaasen increasingly feels that the perpetrator is always one step ahead of them. It almost seems that way.