I really loved this book so very much I really liked the concept and the way the story was told very much with the alternating POVs. I really liked the characters especially Em and Cas I really liked how their relationship developed and even after

Spoiler

Cas found out she was not who he thought she was and after they were attacked he still came to love her by the end

that it was a really well written romance I loved it so much. I really loved the plot it was exiting and edge of your seat at parts while also being really heart wrenching and so very interesting I really liked the concept of Em pretending to be someone to save her sister I liked what developed from that pretense. So overall I loved this book and will be continuing the series soon.