Tensions escalate between two clans, threatening their fragile peace. On one side stand the Tuath, on the other the Milidh. The prize: control of the land of Eire. Yet amidst this brewing conflict, another more dangerous threat looms. The village of Tara is ripped apart, not by war, but by the seed of betrayal as the priestess' own kinswoman, Grainne, conspires to seize control. Enemies shall become allies and Shiovra is faced with a difficult choice, one that will ultimately engulf her world in an irreversible eclipse."