Professor Carlton Jones, of Celtic Affairs at the Southeastern University in Atlanta, is taking a sabbatical leave to study castles in Wales. He is an expert on Welsh castles and, in particular, wants to study the Castle of the Scarlet Ghost, little known today, but dating back to King Henry IV of England. He arrives at a bed and breakfast house, which adjoins the ruins of the old castle. Anxious to get started, though it is late in the afternoon and stormy weather, he starts up the hill towards the castle. A blast of lightning and a broken tree bough knocks him to the ground, unconscious. He awakens in a strange mansion in the Fourteenth Century attended by a beautiful girl. The mansion belongs to the wealthy and powerful master, Owain Glyndwr, who becomes the greatest hero of Wales. Although Glyndwr is, at first, skeptical of the professor's story, they soon become good friends. Glyndwr organizes a resistance to the cruel English masters, and Jones, his assistant, does not reveal what history will produce. Eventually everything is lost, and in the last chapter, the castle gains its name. Along the way, Glyndwr rescues Lady Margaret from the Tower of London. Many battles are fought, won and lost, and Professor Jones and the beautiful Siriz fall in love. Although Glyndwr is Wales' greatest hero, little is known of his life. I have researched his history and visited Wales twice. There is an article on Owain Glyndwr in the 2001 April/May issue of British Heritage. It indicates the interest that the public has in Owain Glyndwr.