Luise grew up with her grandmother Selma in a remote village in the Westerwald. Selma has a special gift, because she can foresee death. Whenever an okapi appears to her in a dream, someone in the village dies the next day.

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Oliver von Bodenstein and his colleague Pia Kirchhoff of the CID Hofheim investigate among the high society of the Taunus region: Holocaust survivor David Joshua Goldberg was literally executed in his house. The murderer wrote the number "16145" with the victim's blood on a mirror. During the autopsy, forensic pathologist Henning Kirchhoff finds the remains of a tattoo, like the ones that were common at the "Waffen SS". More murders are committed, using the exact same pattern. Why would anybody kill three old people? And what does the mysterious number mean? Each victim had something to do with the well-known entrepreneurial widow Dr. Vera Kaltensee.