I received an ARC of this book curtesy or Penguin Teen. I am SO hyped for this book. Marie Lu gets better at every series she writes. This book is perfect for fans of Ready Player One or Illuminae. It's action packed with great world building, incredible characters, and a few twists that left me aching for more. This series is going to be an instant hit. Not only is it well written but it's so much in to read. I can't wait for everyone to get to read this!