I really liked this one--the banter worked for me, partly because the characters don't all talk the same (a problem in some of her earlier books). I'm waiting for the next one with bated breath.

Spoilers speculation for the ending:
V guvax gur jbzna ng gur ortvaavat jub bssref Enr gur pubvpr zvtug or gur nhgube bs gur obbx? Jub'f gur tbqqrff jub tbg chfurq bhg? Naq fur xrrcf gelvat gb trg gur sybjre fb fur pna or erobea vagb gur jbeyq be fbzrguvat? V qba'g xabj ohg V nz irel vagrerfgrq va svaqvat bhg.