The Wall of Eden

-Book one of the Wall That Destroyed Humanity-
The wall of eden has always stood to protect humanity. No one can survive without the wall's protection from the disease the scratchers carry. So when two siblings, Waylon and Damien, get banished to the outside. They are determined to make the leaders wrong but most believe it means death. But when the two find their younger sister, Tilly, who is supposed to be dead. The way everyone thinks starts to change. They start asking questions. Tilly has been scratched but how has she not died? More importantly how did she get outside the wall in the first place?