Light (Gone Book #6), Michael Grant

All eyes are on Perdido Beach. The barrier wall is now as clear as glass and life in the FAYZ is visible for the entire outside world to see.

Life inside the dome remains a constant battle and the Darkness, away from watchful eyes, grows and grows … The society that Sam and Astrid have struggled so hard to build is about to be shattered for good. It’s the end of the FAYZ. Who will survive to see the light of day? This is the nail-biting finale to the GONE saga.