** spoiler alert ** 
 I thought that this book was really great. I liked how we learned even more about Six and how she was kidnapped by the Mogadorians. I also enjoyed meeting Seven, and reading the story from her point of view. 
 I was extremely surprised when I found out that there was a second ship, with a tenth Garde. And that it was Ella, one of Seven's friends at the orphanage, only made it better. 
 However, i did not like how John and Six just magically started to have feelings for each other. Or how when John was in Paradise, and decided to go and visit Sarah, she called the cops on him, even though they currently believe that he is a terrorist, and she knows the truth. It seemed out of character to me. 
 I also did not like that they left Samn at the end of the book (pretty much to die), but I think that John only did that at the persuasion of Nine. I hope that in the next book we find out what happened to him (and that he survived!). 
 I can not wait for the next book in the series, and hope that it is just as good as this one!