I've read a couple of Mark Morris's books, but not for years. He's difficult to find in your average bookshop and, after the big promotional push of his first novel "Toady", seems to have slipped off the radar a bit. I really enjoyed Longbarrow. It takes a while at first to bring all the characters' stories together, but builds and builds until I literally had to read the last half in about two sittings.
Mark Morris has a very easy-to-read writing style that goes right to your cerebral cortex. And there are some really atmospheric parts too, especially an encounter with some strange "children" in a wood and a big set-piece later around the grounds of the local church. I won't spoil that one for you.
All in all a really good, and properly horrible, horror story. Off the back of this, I've already bought another of his books, Mr Badface, so he must be doing something right.
If you're a horror fan, you'll really like this one, honest.