Lady Emily, husband Colin Hargreaves, and their three sons eagerly embark on a family vacation at Cairnfarn Castle, the Scottish estate of their dear friend Jeremy, Duke of Bainbridge. But a high-spirited celebration at the beginning of their stay comes to a grisly end when the duke's gamekeeper is found murdered on the banks of the loch. Handsome Angus Sinclair had a host of enemies: the fiancee he abandoned in Edinburgh, the young woman who had fallen hopelessly in love with him, and the rough farmer who saw him as a rival for her affections. But what is meaning of the curious runic stone left on Sinclair's forehead? Scotland, 1676. Lady MacAllister, wife of the Laird of Cairnfarn Castle, suddenly finds herself widowed and thrown out of her home. Her sole companion is a Moorish slave girl who helps her secretly spirit out her most prized possessions from the castle: her strange books. Her neighbors are wary of a woman living on her own, and when a poppet - a doll used to cast spells - and a daisy wheel are found in her isolated cottage, Lady MacAllister is accused of witchcraft, a crime punishable by death. Hundreds of years later, Lady Emily searches for the link between Lady MacAllister's harrowing witchcraft trial and the brutal death of Sinclair. She must follow a trail of hidden motives, an illicit affair, and a mysterious stranger to reveal the dark side of a seemingly idyllic Highland village.