Great read. The previous book was a bit lacking in action. Well, it was packed, but I understand why the author and editor chose to split the fight against the titan in two books and publish them closely in time.
Lots of progression for many characters. We don't have yet all the answers on the "starborn" side of things.
There are at least one discussion on free will and Fate in there. But it still does not touch the issue I stumbled upon my re-reading of the Dresden Files. How come Harry became Winter Knight by a decision of his own and now must abide by his choice, but Molly just get saddled with the Winter Lady mantle without any conscious decision — aka. free will — from her part.