Awesome! Excellent ending to this series. Hoodwink's story is completed in this book, not without several surprises along the way. All those plot twists are very well done - I did not guess the ending, which I always count as a big plus.
That said, the overall story does not seem to be finished. The crisis that was the focus of the series has been resolved. The future of the people both Inside and Outside is still a big question mark. There is plenty of room for more development of this universe, which I hope means that Isaac Hooke has some plans for that. I enjoyed the whole series very much, and would be happy to read more!