This seems to be a flipside novella, laying out a roughly similar premise to Cold In July of an ordinary family man enlisting help to go after some very bad people. It's most notable feature the amazingly terrifying Booger, a pure murderous sociopathic killer, who is also one of the good guys. It's very good, but not as full-on, either in terms of emotions or violence, as you might expect. Though it has its moments.