I have read this book a few times as well. Not one of the best but a good read. Its quite long but it keeps your interest. the regulators is a good book to follow with this one or the precede it as well.
its about a couple on their way somewhere and they are stopped by a small town cop and taken to the town, a mining town and the trouble ensues from there. Quite graphic descriptions of the killings (of course there are killings, this is stephen king!) and such but a good read.