Guardian of the Vision

In Elizabethan England, twins Griffin and Donovan Kirkwood, heirs to Merlin's legacy of ancient magic, become caught up in the religious, social, and political upheaval of the reign of Queen Elizabeth I, as they risk everything to stop Roanna Douglas, a witch descended from Nimue and who bears a personal grudge against the Kirkwoods, and her forces of Chaos. Reprint.