My Best Friends Exorcism: Grady Hendrix

After reading "Paperbacks From Hell" I thought this was going to be a non-stop hilarious book. It had it's moments, but read like a normal teen novel, with a bizarre twist. At a slumber party one of 4 friends disappears into the woods and when found hours later she is acting odd. The book continues with the rotten things she does as she is possessed by a demon. Her one friend is able to save her and they remain friends and occasionally question what keeps them together.