I have conflicting feelings about this book. The concept was really cool but I found myself wishing for more thrilling pacing and developments. The pacing just felt a little all over the place for me. I don't want to spoil anything so I won't say much else other than the ending was interesting and something I appreciate in the thriller genre. 
This book did spark really interesting conversation though so I think if I had gone I'm with different expectations I would have enjoyed the book more.