This book ends the Cahill portion of the series. I suppose I felt a little let down at the end. It seemed like the author reintroduced some characters from earlier in the series who were extraneous to begin with, and now they were just tossed in to help wrap everything up. It rang false as a result.
Still, I doubt the young reader would be disappointed. I will no doubt read on to the next installment about the Vespers!