Part 4: The Mysteries of Isis, pgs. 281-333 Summary

As she looks through texts, Igraine asks about Iseult and why Arthur does it. Derfel believes that Arthur worships order above the uncaring Gods, and the laws that keep order and the oaths that bind. Igraine observes that Derfel seems less of a Christian than before he begins writing his tales and wishes she were a pagan. Derfel says that Mordred is a Christian only for political reasons, allowing Sansum to build a church Caer Cadarn, leaving only the royal stone untouched. Mordred moves to the Winter Place and Sansum takes over Lindinis, forcing Derfel's family to move to Ermid's Hall. When Igraine mentions the Round Table, Derfel debunks it, worries about his history being distorted in translation, and says only Arthur and Galahad ever believe in the oath. Derfel resumes...