One of the most haunted places on earth, Cairnnon Castle is home to one of the most malevolent entities ever documented. Bás a thagann, loosely translated it means simply -- death comes. So when the enthusiastic American troop descends on Neve's Irish hills, the last thing they expect to do is rile up the evilness within.
But Bás takes an immediate interest in one of the American investigators and holds him prisoner within the castle, sapping his strength and will. As Neve and the others rush to find a solution, before another good man loses his soul to the malicious elemental, she discovers the secret that might send Bás a thagann to its own permanent hell.
But as Neve verbalizes the words that should free Cairnnon from its most evil resident, the castle crumbles around her, leaving her broken, dying and trapped in the belly of the beast.