On New Year's Eve, Rhys Lloyd has a house full of guests for a party to end all parties. But not everyone is there to celebrate. By midnight, Rhys will be floating dead in the freezing waters of the lake. On New Year's Day, DC Ffion Morgan has a village full of suspects - her neighbours, friends and family - and Ffion has her own secrets to protect. With a lie uncovered at every turn, soon the question isn't who wanted Rhys dead . . . but who finally killed him.