In the Absence of Light
by Susan Strayer
Shiloh's world is turned upside down when the Yellowstone super-volcano erupts, plunging the America Sector into volcanic winter. Then his parents are taken away by the government and his best friend, Caliope, is injured by a new kind of lasergun he's never seen before. It's up to Shiloh to find his parents, cure his friend, and find out exactly what the World Union is up to.