At the site where a young man's body was found, Irene Gaup meets her new colleague. Julia Jungklausen, of all people, the young lover of her husband, prosecutor Hans Gaup. The body is found on a remote self-sufficient farm between Berlin and Brandenburg. But what brought 18-year-old Korbinian from Berlin-Wedding there. Nobody on the farm seems to know him? A necklace that Korbinian wore around his neck leads Irene and Julia to a missing person case four years ago. The then 13-year-old Emma Lennartz disappeared without a trace after the birth of her little daughter along with her child. The investigations were led by Irene Gaup, who never let go of the case. Now questions, old and new, are bouncing back with unexpected force: Is Emma still alive? Is she hiding at the Pfisterhof? Did Emma possibly commit the crime or is she herself in danger?

The successful novelist Regina Schilling mysteriously disappears from her Berlin apartment, which she has not left for years in self-imposed isolation. The statements of the only witness who observed her disappearance through the window to the courtyard are of little help to inspectors Irene Gaup and Julia Jungklausen, because the 86-year-old photographer Erik Hamann suffers from dementia. Only his Polish nurse Beata can help to decode the confused statements. In Regina's apartment, the detectives actually find signs of a fight and traces of blood.

Ein Sicherheitsbeamter wird in der Villa eines jungen Konzernerben erschossen aufgefunden. Irene Gaup wird an den Wannsee gerufen. Doch von dem Erben Nikolaus Stahl fehlt jede Spur.