The Prophet of Yonwood

Meh. I agree with everything the other commenters have said. This really doesn't feel like it belongs in the City of Ember series. It's a fine book on its own, and if I wasn't waiting the whole time to find out about the Builders, I probably would have liked it more...but any explanation of the Builders and how/why they build Ember underground was smooshed into a few pages at the end of the book and had nothing to do with everything else that happened. It was disappointing. I'm optimistic about the 4th book though.