Start with The Gashlycrumb Tinies by Edward Gorey(which you can find here: Best Alphabet Book Ever) to get yourself in the mood, then follow that with The Collected Works of Edgar Allen Poe! Or maybe just listen to this guy read The Tell-tale Heart, here: www.youtube.com/watch?v=UXqUGU… Or perhaps some Lovecraft? Who doesn't love Cthullu?