The latest thrilling instalment in Indridason's CWA Gold Dagger Award-winning Reykjavik Murder Mystery series. One cold autumn night, a woman is found hanging from a beam in her summer cottage by Lake Thingvellir. Driven by a need to find answers that even he does not fully understand, Erlendur embarks on an unofficial investigation to find out why the woman's life ended in such an abrupt and tragic manner. At the same time he is haunted by the unresolved cases of two young people who went missing thirty years before, and, inevitably, his discoveries raise ghosts from his own past.