A good horror story doesn't need any blood-just a ratcheting up of the tension to the point where your head feels like its going to explode. This was a good example, IMO. Another that got to me was Ghost Story
with Fred Astaire. By the last scene I was crawling out of my skin. I don't even bother watching Saw or the Jason movies, etc. It's not really horror, IMO, just some graphic killing. Where's the entertainment in that?