Book 3 - Merlin's third daughter is Cassandra of Tregaron. She heals the sick in the Welsh hills at the edge of Avalon. He is Stephan Valois - a true son of William the Conqueror, who must prove himself in battle by defeating the malevolent warlord Malagraine. Drawn together on quest that takes them to the ruins of a enchanted realm, Cassandra must unite with her sister to overcome the forces of darkness that threaten the mortal world. A super read that delivers on all levels!!