Have you read anything by Jack Ketchum? http://www.amazon.com/Jack-Ketchum/e/B001HMPRV2

I recently read Help For The Haunted by John Searles. It's a really good read, very well written and an interesting plot. And it definitely will put some chills down your spine.

Pretty much anything by Stephen King (although a lot of his newer works are tamer IMHO), especailly IT. I couldn't even finish reading it and cringed my way through the movie. Yikes!! I recently re-read The Shining and it's new sequel Doctor Sleep and they're both great.

Some other suggestions that may be more creepy than down right scary:

Joe Hill's books (SK's son FYI), especially his newest one N0S 4A2. If you read that and then Doctor Sleep, it's neat because King references one of the baddies in Hill's book.

The Archie and Gretchen series by Chelsea Cain, especially the first book "Heartsick" . She's a serial killer and he's a detective and they have a weird twisted thing for each other.

The Strain by Guillermo DelToro (now a TV series) - there are 2 other books in the series I believe but I've only read the 1st

Dying to Live by Kim Paffenroth. Very similar to The Walking Dead if you like that series. Again, I think there are at least 2 more books in the series but I've only read the 1st.

While I haven't read any of his stuff in a while, Dean Koontz used to seem really creepy to me too.

Happy reading!!

I always liked any of James Herbert's and of course Dean Koontz who was previously mentioned, his Odd Thomas series is one of my favourites, fantastic character is Odd.