I just finished the third book (literally, last night) in the saga and all I can say at this point is Oh. My. Holy. Wow. *Breathless*.
I cried, I laughed, I cried some more. I sat on the edge of my seat, tense and waiting to find out what comes next. Over all, when I can play background music in my head while reading, I know that I am reading a good book. This (The Secret Empire) is a good book.