City of Bones (Mortal Instruments No. 1)

485 pp. plus preview of City Of Ashes."Their hidden world is about to be revealed.... When fifteen-year-old Clary Fray heads out to the Pandemonium Club in New York City, she hardly expects to witness a murder -- much less a murder committed by three teenagers covered with strange tattoos and brandishing bizarre weapons. Clary knows she should call the police, but it's hard to explain a murder when the body disappears into thin air and the murderers are invisible to everyone but Clary.Equally startled by her ability to see them, the murderers explain themselves as Shadowhunters: a secret tribe of warriors dedicated to ridding the earth of demons. Within twenty-four hours, Clary's mother disappears and Clary herself is almost killed by a grotesque demon. But why would demons be interested in ordinary mundanes like Clary and her mother? And how did Clary suddenly get the Sight? The Shadowhunters would like to know."