'He can feel something else coming through, something uninvited.'
I love horror.
...You may or may not have noticed.
Generally speaking, the less-realistic and more fake-looking the horror is, the more I'm freaked out.
There are some notable exceptions (Pet Sematary *shudders*) but overall, the more realistic and convincing the horror is, the more I'm like: meh, it's a ghost.
Related Reading: Nerd Church - My Real-Life Ghost Stories