Scare me to death please.

It's the month of terror, I need some good horror to keep me from sleeping!

Here's a list of games, manga, and anime I have ALREADY seen or plan to see/play

Higurashi
Umineko
Saya no Uta
Hellsing
Paranoia Agent
Kakurenbo
Pet Shop of Horrors
Death Note (does this count?)
Ookami Kakushi

I need ANYTHING that is horror related that can scare me!
EDIT: Forgot to clarify, anime, games, manga, live action j-horror, books, ANYTHING literally. DON'T HOLD BACK.