Ghoul - Brian Keene

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 has learned 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.