You know it's a good series when, after you finish the book, you keep wanting to go back and read the next part only to realize that the next part isn't out yet.
It took me a while to get into the book at the beginning - there were many new people and--with my terrible memory for books I have read--I wasn't always sure whether I ought to remember anyone from the Eternal Sky trilogy. But as I got to know the major players and their personalities and get invested in the developing conflicts, I shifted from "I can stop whenever I want" to "ugh, why did you have to take a short nap today of all days, child!"
And I look forward to finding out what happens next because kingdoms are in peril and derring do needs to be done!