I liked The Vault of Dreamers, loved The Rule of Mirrors, and quite enjoyed The Keep of Ages. In all, it was a strong series that I'm glad to have read. I still feel like the second book was the strongest in the series, but I liked the way this one wrapped up the series.
The tone for this book was quite dark, both atmospherically and psychologically, and it worked out very well. I think that the stakes were adequately high for a final novel in a series, and I appreciated that. The author did a fabulous job of making the settings come to life and feel authentically eerie. While most of the characters, especially Rosie, were fleshed out very well, there were a few I'd have liked to see a bit more of, but that was a minor issue.
My one gripe with this series is that the technology seemed all over the place. One minute there was dream mining, and the next people were talking on tablets and Facebook. I mean, maybe I'm wrong, but I highly doubt our grandkids will be using Facebook 60 years from now. Call me a skeptic. I also wasn't wholly convinced of some of the things toward the end of the book, it seemed a bit farfetched. (Sorry, vagueness required!) But while I may have not believed the steps it took to get there, I did enjoy the end of the story itself.
Bottom Line: While the end of the series wasn't a complete home run, it definitely provided a satisfying conclusion and plenty of action and atmosphere!
Copy provided for review