Arthur McCallum, a young English policeman, discovers the truth about his own destiny when he and Melchior, apprentice to the wizard Merlin, battle the evil forces of Mordred, in a modern version of the Arthurian legend.
Lessons "told from the wizard's point of view," ... "illustrated by stories from the world of Merlin and Arthur" ... which "are not fragments from the old legends but parables ... set in that time."