East Frisia is gripped by fear as a serial killer targets women in vacation rentals, striking where they feel most secure. All of the victims had a tattoo. Could this be the connection? This time, Ann Kathrin Klaasen is not only hunting a psychopathic murderer, she is also trying to save her husband Frank Weller from disaster. And to make matters worse, she also has to deal with the interference of the Federal Criminal Police.