This book is about a group of teenagers going out on a late Saturday night but once they leave they walk to there car but they here something growl like a infected dog so one of them goes to check it out but all of the sudden he starts to scream he starts to bleed someone or something slit his throat all the other teens ran in the car and drove away but about 30 minutes after there in the middle of the road driving and something bangs on the back door so hard it opens