The Mortal Instruments: City of Bones

Clary Fray always considered herself to be an ordinary girl, until it was revealed that she was a descendant of an ancient line of Shadowhunters, a secret caste of half-angel warriors protecting our world from demons. When Clary's mother disappears, the girl teams up with the Shadowhunters to save her. Thus begins her dangerous introduction to an alternate reality where demons, magicians, vampires, werewolves, and other deadly creatures exist.