Just a few of my favourite spooky classics to wrap up the season. These are all well worth a read. You may find, in fact, that they are so good you'll be wanting to re-read them every October.
I'd also have to give Stephen King an honourable mention here, but he and I had a small falling out when he got too gory. I don't do gore well and think it is quite unnecessary when the story is good and has a solid creep factor.