I'm sure everybody knows already, but this series is utterly awesome. Hill, Rodriguez and IDW are to be commended for this consistently compelling work. I've been catching the trades as they come out, and the fourth, Keys To The Kingdom, has just found it's way in to my collection. The Calvin & Hobbes first section is genius. The only killer is the wait between books
Oh, and Major Spoilers have a quote on the back of this one, as they did on vol2 Head Games.