Frank Elling and Lona Mendt must enter the lion's den. All clues point in one direction and to powerful backers.

To get closer to the motive of the series of murders and thus the people behind the conspiracy, Frank Elling and Lona Mendt have to cross moral and legal boundaries. At the same time, Elling's family life is thrown into disarray and Lona suffers a serious stroke of fate.

The murderer continues his gruesome series of murders and the pressure to catch him increases massively. When the motive is revealed to the investigators, they know why the perpetrator is murdering, but not who he is.