City of Bones is by Cassandra Clare. The first book in The Mortal Instruments series. Fifteen-year-old Clary heads out to a club with her friend Simon but she doesn't expect to witness a murder committed by three teenagers no one else can see. The murderers explain they are Shadowhunters, a secret sect of warriors that hunt down demons. When Clary's mother disappears and Clary is almost killed by a demon she finds herself needing the Shadowhunters' help to find her mother. But do they need Clary as well?
Ratings: 8th grade - 9 out of 10 - MP (mild profanity).