For over twenty years the sex-killer Joachim Kroll had been strangling women across northern Germany. He claimed an internal force drove him, picking on women alone in the countryside. Many are strangled with their own clothes. Then he molests them. As his killing spree increases, he starts to target younger and younger victims. But even this doesn’t satisfy. He kills and cooks a cat, which only drives his desire to taste human flesh. His demons overpower him into killing, dissecting and then eating a neighbours’ 4-year-old girl. But when he’s unable to dispose of the evidence, he’s picked up by the police. He’s charged with 12 murders but admits to 30, making him Germany’s most prolific killer in decades.