Hywel and Gareth have returned to Aber for Hallomas, and hopefully, to be present when Gwen gave birth. Unfortunately, a body has been discovered on the beach. Gwen has been fetched since Hywel and Gareth are away at the moment. The body is desiccated and appears to have been dead for a number of years. Upon examining the body, Gwen finds a head wound and evidence of bleeding, she also recognizes the embroidery on the gown. When Hywel and Gareth arrive, Hywel recognizes the necklace and realizes it is his cousin, Tegwen, who everyone believed had run away with a Dane five years previously. And so another murder investigation begins. Before it is ended, there are more murders and a near miss as well as a fire.