Her father has been dead for 15 years, but the unsolved murder doesn't leave Chief Inspector Ann Kathrin Klaasen in peace. Worried, her colleague Frank Weller urges her to go to the doctor. In practice, she experiences a huge surprise: in the waiting room, she sees a photo of her own father in an old lady's wallet, together with a woman she does not know. Even if Gertrud Klocke asserts that the man in the photo is her deceased daughter's fiancé, there is no doubt for the inspector. Ann Kathrin cannot forget the encounter. Therefore, she looks for Mrs. Klocke again in the retirement home, but finds the old lady lifeless in a beach chair. (thetvdb.com)