Beyond the Unknown (Paperback)

Addison and her twin sister are nothing alike. They don't agree on anything, except one thing: Revealing the secrets of the moon. When the sisters and their friends refuse to obey the Enforcers, all of humanity is put into jeopardy as they try to strive on the moon. As they fight to undo what they've done, they learn the importance of bonds - and loyalty to those bonds - through this fight of survival.