The ideal world of Göttingen is shaken by a serial predator who ambushes women in remote corners and forces them to engage in sexual activities. The "Viking", as the man is called in the press, has so far left his victims alive. When the body of the student Mira is found in a small park by a lake, Charlotte Lindholm and Anaïs Schmitz wonder whether the "Viking" could have gone a step further this time. An eyewitness describes the perpetrator as a man of immigrant origin. But the witness appears biased. Is his statement really reliable? In order not to lose any time, Charlotte Lindholm initiates an extended origin analysis of the DNA from the crime scene.