i enjoyed reading this book. It kept my interest because all i wanted to know was WTF HAPPENED TO THEM?! And of course YOU NEVER FIND OUT! Which kinda the only reason i rated the way i did. I really want to know what happened. Were they on a different planet? Was there a bomb that went off? Where did the guards live? Where did they go? What did the alarm mean? If those guards on the buses heard the alarm why werent they more scared? If a bomb did go off why were there no bodies near the original cage? WHAT HAPPENED!! So many unanswered questions!! Great writing