Edit: I was recently discussing this book with a friend and the more we talked about it the more glaring the flaws in it became, so I'm bring my rating down a star and a half. So 3.5 stars. I still really enjoyed it, but in hindsight and no longer running on non-existent sleep, I don't think it was a good as it could have been. 

Original:
This was INSANE; insanely good, and gripping. I couldn't stop. Sleep? Who cares about that, how could I sleep when this had my mind racing and panicking endlessly. Continuous escalation. Fascinating detail. And the incredible contrast between Pippa in AGGGTM and AGAD. I love every single book in this trilogy, but this one honestly blew my mind, it was not what I expected going into it, and I'm so glad for that.