Hidden ritual
In truth I've always known that the house I live in is haunted. The soft sounds of soft footsteps when you're home alone, the whispers when the house is empty... You know all the signs. All have been told before already after all. We were just lucky that it never got worse than that, yes sometimes small objects would have been placed elsewhere, but we never got the feeling that we were dealing with something that was dangerous or angry. So we just let it be, whatever it was.