I am so sad that this series is over.
I read this in one sitting--about 4 hours--and I bawled.
So much of what I was moved by are spoilers, so I won't be too specific, but know that this is an excellent and VERY satisfying conclusion.
I wasn't expecting many of the twists and turns, and the tension throughout is so palpable I am beyond envious of Collins' ability to craft an amazing story.
I. LOVED. THIS. BOOK!!!