The Subway Guy

[ItBreathes]

There's a lot of clues before you get to it. You have to view them to get the scene, also. It just says how the presence doesn't go away because it was a traumatic event. I think it also says something about the presence being stronger in a more populated area and when they are recent. You'll have to look it up on gamefaqs.com to get where all the clues are that you have to look at.