Picked this book up not realising it was the SECOND DemonWar Saga, so I was basically reading it as a continuation of the previous saga (DemonWars). I don't know that it makes that much difference; it's basically the same cast of characters as before, with a similar progression of logical and also out-of-the-blue story developments.
This book, I guess, is half about Jilseponie and half about De'Unnero (and some other stuff, but *spoilers*). There's a little too much, perhaps, of courtly drama for my tastes, but at the same time, if I view the book as a kind of history book, it works all the same.
Of more interest to me is the progression of De'Unnero. Without giving anything away, I will say that it's an amazing roller coaster of a ride.
Of further interest, and this spans more than just this book but got highlighted for me by this book, is just how well R.A. Salvatore explains, through action, the archetypes (well, class types, really) so common in RPG. I mean, I've played as a ranger before in an RPG game, but only because a friend told me it was worth doing because you could get a wolf as a sidekick, and I've never really known what the point of a bard was. But these books so clearly show off the benefits of these "classes", and it formalizes, in a way, the idea that certain characters are a certain class, with access to (if not mastery of) specific powers. This whole series ought to be required reading for anyone who doesn't understand RPG gaming.
That's obviously not meant to reduce this book to an RPG rulebook. This is a good book, you should read it if you've read the first series.