When she was sixteen, Joanna Archer was brutally assaulted and left to die in the Nevada desert. By rights, she should be dead. Now a photographer by day, she prowls a different Las Vegas after sunset-a grim, secret Sin City where Light battles Shadow-seeking answers to whom or what she really is . . . and revenge for the horrors she was forced to endure. But the nightmare is just beginning-for the demons are hunting Joanna, and the powerful shadows...

On the surface she's a sexy, sophisticated socialite, at home among the beautiful people of the Las Vegas upper crust. But Joanna Archer inhabits another world: a place ordinary humans cannot see . . . a dangerous dimension where an eternal battle rages between the agents of Light and Shadow. And Joanna is both. Stalked by an enigmatic doppelganger from a preternatural realm, Joanna can feel the Light failing-which is propelling her toward a terrifying...