Lore by 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. They are 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, turning her back on the hunt’s promises of eternal glory after her family was murdered by a rival line. For years she's pushed away any thought of revenge against the man - now a god - responsible for their deaths.
Yet as the next hunt dawns over New York City, two participants seek her out: Castor, a childhood friend Lore believed to be dead, and Athena, one of the last of the original gods, now gravely wounded.