*4.5 This book was so action packed and interesting! in a weird way it kind of reminded me of The Host with the love story connection. At times the inner thoughts of Cassie irritated me but they made sense due to the background story we got about her losses. 
 I would have loved to have read the story through Evan's POV more and perhaps Sammy's a little as well, but overall I liked the way the book was split up into several characters' POV. I felt like I was really able to connect and understand Cassie, but felt like I needed a little more about Ben and his life to make a true connection. We didn't get as much as his backstory and I think maybe that would have helped me connect more to his character. 
 Overall, I really enjoyed this book and would recommend it to anyone who likes action and science fiction.