A Brilliant Disguise by Keith Andrews

The story is set in the South Bronx, 1976. Fifteen year old Eli Goldman wanders in a world of burned out brownstones and violent street gangs. Despised by his family and feared by the street gangs that lay claim to the streets, young Eli searches for his destiny. Years before, late one night, he catches a glimpse of that destiny when a passing car silhouettes a beautiful young girl watching him from the second floor window of a burned out brownstone. While he waits for his destiny to reveal itself, he roams the ruins of the South Bronx, hunting the feral dogs that attempted to kill him as a boy, and any other predator that would challenge his supremacy as the apex predator on the streets of the Bronx. Told by his family that the girl in the window is a demon, rather then an Angel, Eli waits alone for the truth to be revealed. Either way he knows shes coming.