- Publisher: Harper Voyager
- Edition: Reprint
- Available in: Mass Market Paperback, Kindle, Audiobook
- ISBN: 0061058394
- Published: April 8, 1998
While training Arthor, the Eagle of Thor, to lead the Celts in victory, Merlin realizes that his pupil is a naive and bloodthirsty boy who revels in killing, and Merlin must race against time to find the sword of goodness and light to release Arthor from his urge to kill.