The Dark and Hollow Places / Carrie Ryan / 376 pages / December Challenge Apocalyptic Literature

This is the thrid book in The Forest of Hands and Feet trilogy.  It is a post-apocalyptic world and small population remnants struggle to survive in world abandoned by technology.  Gabry is alone in the Dark City as Elias has been away serving with the Regulators.  Katcher destracts guards from approaching Gabry and the disturbance on the bridge attracts Abby's attention.  Is this her long lost sister?  The sisters realize that the true enemy is the authorities who sponsor games and specialize in cruelty.  Using hot air balloons and New York City's underground, they Elias, Katcher, and other Dark City residents are able to escape and hope to establish a new community.