It's the end of the world and no one's fine in this debut psychological thriller from Parker. Lyla Hamilton's little sister was kidnapped in New York City just before 9/11. Her inconsolable parents fell prey to a charismatic man calling himself Pioneer, the leader of the Community, who promised to keep them safe from the coming apocalypse. Now seventeen, Lyla begins to see through Pioneer's façade. She also becomes attached to Cody, a boy she met on the outside. As the end draws near, Lyla feels she must warn the Community, but will anyone believe her, or will she be trapped forever in the compound's underground fortress--the Silo?