When her grandmother dies, Catherine Llewellyn finds herself alone in the world. Her inheritance is a comfort, but her grandmother's will states she must go to the family home, Langland Hall, to live with her two unknown cousins, Garth and Jonathon. The harsh and inhospitable coast is a sharp contrast to Catherine's previous country existence, and the welcome she receives from Garth is equally cool. Only Jonathon seems happy to welcome her to her new home. But no sooner has she arrived than she realises that something dangerous is waiting for her. . .