The Irish Harper (The Norsewomen #7)

When Ragnhild pledges to return Cian to Ireland at Åsa’s request, she little suspects the Irish harper has secrets that turn the vow into a perilous journey and endanger the lives of those she loves.
Meanwhile, Horik’s evil sorceress, Groa, has survived the fire and sworn vengeance on Åsa. Through her ordeal, Groa has gained powers so great only Heid can defend against her. But Heid’s mind wanders in the shadows between life and death. When Groa lures Halfdan into her trap, knowing his mother will follow, Åsa must fight alone for her son’s life—and her own.