Alexandra Bracken

"Every seven years, the Agon begins. As punishment for a past rebellion, nine Greek gods are forced to walk the earth as mortals, hunted by the descendants of ancient bloodlines, all eager to kill a god and seize their divine power and immortality. Long ago, Lore Perseous fled that brutal world in the wake of her family's sadistic murder by a rival line, turning her back on the hunt's promises of eternal glory. For years she's pushed away any thought...

Sixteen-year-old Ruby breaks out of a government-run 'rehabilitation camp' for teens who acquired dangerous powers after surviving a virus that wiped out most American children.