Having opinions on single books in a series is difficult, because by book 4 I don't remember what I know from just this book and what was set up in previous books. I must admit, there were nice character things happening, on the other hand, it emphasised that a character I love (Persephone) had to wait a whole book to have a tiny character development. And this book is the first in the series that is actually just the first third of another story (t.i. too many plot points are still open by the end) to be taken as a book instead of first third of one. I guess the most interesting development in this one was Tesh's, I'm still curious how he turns out.