Psychic danger and romance in petticoats and brass buttons. The arcane Guild has many secrets. Those born to the secret order are sworn to defend them. Grace Tremaine, last of her line, has never doubted her decision to claim the role of next Guardian... until now. A dark-eyed stranger has arrived on this wild Scottish coast, with more burdens than the one he unknowingly carries for the Guild. Anthony Bladewood is an agent of the Crown and knows the rules, but this time his soul is not listening. The dark weariness slowly consuming him is an occupational hazard. Incurable. Until he meets the bright autumn-haired chatelaine. Neither expects more from life than what they have been dealt, but both find it harder to bid farewell than it should be. Beyond the stone wall, hostile forces gather. It is time to choose who will stand on the battlements.