In order to get away from the married doctor she had fallen in love with, Susan Moore took a job as a private psychiatric nurse on Sanctuary Island, at Duncarlie Castle. The castle had been brought over stone by stone from Scotland and people said it wasn't haunted.... But if there were no ghosts, there were tragedies which still held sway over the castle and its inhabitants. And Sanctuary Island was a sanctuary only for the birds who lived there, watched over by the enigmatic Park Ranger, Ross Hunter.