As the finale to a great trilogy, this book was really great! A good standalone adventure, but the overall series was so interesting, I'm honestly sad it's over. The door still feels a open to future adventures, but was still a satisfying conclusion if this is where it ends. I love the commentary from the girls in the Athena Club. Somehow, a feature that may be too much in another author's hands is able to be one of my favorite parts of this series!