The First 7 - Last 8, Book 2 (Unabridged)

Clover Martinez and The Last Teenagers on Earth are busy exploring the galaxy after leaving earth behind...even if they can't help but be a little homesick. So when their ship receives a distress signal from their former planet, they hope against hope that it means other survivors. But as soon as they arrive, they realize something's deeply wrong: strange crystal formations have popped up everywhere and there's some sort of barrier keeping them from leaving. Seeking the origin of the formations and the reason for the barrier, the group discovers a colony of survivors hidden in the mountains. But the survivors aren't who they seem...