I recently finished, "We have always lived in the castle," by Shirley Jackson. Pretty good and creepy, especially when re-reading. After reading, "The haunting of Hill House" last year, I'm becoming a fan of Jackson.
A warning though if you read these books: Stay away from the Introduction until you finish the book. Both times, the person who wrote the intro spoiled the entire book. If you want to discuss themes of the book, fine. But if you plan to spoil the entire plot, stick your discussion at the end of the book instead. At least with, Castle, I skipped the intro after seeing signs of this, returning later to see this, but I did get a huge unwanted spoiler with Hill House.
Currently reading, "The third policeman." And while I knew it was supposed to be weird before I started, I now realize that it's got some Phantom Tollbooth-level mind screws!