A charismatic investigator and a harrowing cold case: a young mother disappears on her son's fifth birthday - and she's not the only one ... The first in a new series by SPIEGEL bestselling author Christine BrandMalou Löwenberg is a detective in the homicide squad and a foundling. When she meets Dario, she is fascinated by his story: Dario's mother disappeared without a trace on his fifth birthday. Although everything points against it, he believes that his mother is still alive. Reminded of her own story, Malou begins to investigate. She comes across more and more missing persons cases: all the women disappeared on their children's fifth birthday and all the children, like Dario, still receive mysterious birthday cards today ...Read also the exciting Milla Nova series and "True Crime": Christine Brand writes about her most dramatic cases as a court reporter.