I remember there being more action in this one than in the previous book. However, this was where the capture/re-capture them started to get annoying, like it was relied on too much. I was still engrossed, but there were parts I wished had gone another way. 
 At the same time, I love Yelena as a character, and there can't be enough Valek - I enjoy reading about their relationship. 
 There is plenty left over for future stories in this world.