I've loved all three books in the series, but this was the icing on the cake. The tension and conflict between the frozens and Elder's people was pretty much what I expected, but I still loved how well Revis wrote Amy into the middle of it all. There are some wonderful twists and turns, some that I NEVER saw coming and they were awesome!
Revis does a wonderful job building a new world and sharing the wonder with us. I read this the same time my daughter did and we kept trying to guess what would happen and who the bad guys really were. It was fun to do together. I also liked the way Revis kept with the "solve the puzzle" theme from the first two books. Before starting I thought that would be finished, but no! Love it!
In the end, all the loose ends are tied up, questions answered, and after several chapters of sitting on the edge of my couch that wonderfully satisfying resolution.