Ken and Barbie, the brutal serial killer couple from Canada. Cologne, June 2023: It's hot. The rivers are at low levels when a woman's body is found in the Rhine. Sophie Kaiser, a profiler with the Federal Criminal Police Office (BKA), takes over the investigation. Due to her Asperger's syndrome, she assesses connections differently than others and soon realizes that a serial killer is at work. When another woman disappears, Kaiser suspects that they aren't just looking for one murderer: A pair of perpetrators are luring the women into a trap... How would a modern profiler approach the case? The real methods of case analysis, applied to a true crime! Also read Volume 1: 'Inside the Mind of Evil - The Sandman'. Biography (Axel Petermann) Axel Petermann, born in Bremen in 1952, is a detective inspector and crime scene analyst. Petermann has worked for the Bremen Criminal Police for more than 30 years and has investigated over 1,000 cases. He heads the Operational Case Analysis Unit in Bremen, teaches criminology, and advises the editorial team of the crime drama series "Tatort." Biography (Petra Mattfeldt) Petra Mattfeldt, born in 1971, grew up in a small town in northern Germany. She trained as a legal and notary assistant and subsequently worked as a freelance journalist. Today she lives with her husband and three children in a small town near Bremen. New product