GHOUL by Brian Keene.

OVERVIEW: June 1984. Timmy Graco is looking forward to summer vacation, taking it easy and hanging out with his buddies. Instead his summer will be filled with terror and a life-and-death battle against a nightmarish creature that few will believe even exists. Timmy learns that the person who’s been unearthing fresh graves in the cemetery isn’t a person at all. It’s a thing. And it’s after Timmy and his friends. If Timmy hopes to live to see September, he’ll have to escape the...GHOUL.

First Paperback, Leisure, 2007.