Liked this one. Picked it up late enough to have forgotten some of what came before, but it still worked well enough. 
 Also enjoyed Puck's "growth" through the book. The parents bored me a bit, and I did guess who the Master and spies were before the end (read too much "Fables"). But it was still enjoyable enough that I can't wait for the next one (if only for the Puck/Sabrina interaction!).