Chasing down an uncertain future, Cassia makes her way to the Outer Provinces in pursuit of Ky - taken by Society to his certain death - only to find that he has escaped into the majestic, but treacherous, canyons. On this wild frontier are glimmers of a different life ... and the enthralling promise of rebellion. But even as Cassia sacrifices everything to reunite with Ky, ingenious surprises from Xander may change the game. On the edge of Society, nothing is as expected, and crosses and double crosses make Cassia's path more twisted than ever.