I think book 1 and this one should be read concurrently because I was a little lost on this book. 

Io and Bianca are in most of this book, following a golden thread to a God that they can't find. They come to realize that people are being kidnapped and their world seems to be heading towards the apocalypse. 

This was a very wordy book and I felt myself grazing non speaking parts- which there was a lot. I wanted to see even more of Io and Eidi and didn't get that much in this book either. I don't know how their thread, when Io used it to sever the life of one of the Gods, that it was still able to be connecting these two fated lovers. 

I guess I'm glad it's a duology because I would be done if it was a whole series.