The victim: a businessman missing for thirty years. The case: impossible to solve. Until now. A woman approaches Konrad with new information and progress can finally be made. But as Konrad starts to look back at the case and secrets of the past, he is forced to come face to face with his own dark side. In What the Darkness Knows, the master of Icelandic crime writing reunites readers with Konrad, the unforgettable retired detective from The Shadow District.