It all began when Sir Hilary Bill-Tasman invited Agatha Troy to write a portrait for his family gallery at his estate, Holberds. Christmas is coming, so several eccentric characters gather at the Holberds family home: Sir Hilary’s beloved—an elderly uncle named Jump—with his wife, Aunt Trach. And also their butler Moult. And then, danger that seemed to be in the air of this old house even before it happened turns into trouble. The butler, having danced before the Christmas tree in a fur coat and beard, disappears on Christmas Eve. Under mysterious circumstances…