Two stories: the first is about a man breaking into a genetic database storing medical information on the Icelandic people. After losing his daughter to a hereditary disease, he then tries to trace his own roots. The second story is about a murder investigation of an old man that leads to unusual forensic evidence, uncovering secrets that have been kept in the genetic bloodline of the whole nation.
Based on the eponymous crime novel by Arnaldur Indridason.