For years the misty Shadowline has marked the boundary between your lands of men and the shed northern lands that are the lair of their inhuman enemies, the ageless Qar. However now that boundary range is shifting outward, intimidating to engulf the northernmost property in which human beings still live – the kingdom of Southmarch. For years and years, the Eddon family offers ruled in ancient, forbidding Southmarch Castle, guarding the boundary against the Qar’s return, however now this effective royal collection continues to be dealt a damaging blow. The monarch, King Olin, has been held captive within a faraway property, and it falls to his inexperienced heirs to lead their people in a period of growing danger and dread. It really is on both youngest Eddons that this heaviest burdens fall. The twins Barrick and Briony, who in such wicked times have only each other, may lose also that connection as darkness closes over them. As the Qar’s power gets to out across their property, will Southmarch Castle, the only home they’ve ever known, become actually what it has long been known as – Shadowmarch?