In , Thomas risks more than he should for the Princess of Fal Carrach, falling prey to the Dark Magic of Lord Chertney, a servant of the Shadow Lord. Beaten and almost broken, Thomas must dig deep as his strength and cleverness are tested in the Labyrinth, home of the living nightmare called the Makreen. is the fourth book in , a sword and sorcery, coming of age, Arthurian fantasy series.