Bull Mountain by Brian Panowich
This story is a debut novel by Panowich that takes place in the Appalachians of Georgia. The Bourroughs family has owned Bull Mountain for generations making a living by bootlegging whiskey. Now instead of working stills they grow marijuana and make Meth. An FBI agent is on to them and intends to bring the whole family down. He enlists the help of the local sheriff who is also a Bourrouhgs. Panowich throws a twist into the story 2/3rd s of the way through that you don't see coming.
I liked this book. An easy read.