"There are more things in heaven and earth, Horatio,
Than are dreamt of in your philosophy." ~ Hamlet, Act I, Scene V
Once, while discussing the legends of such things as Vampires, Werewolves, etc, a dear friend said, "People see what they want to see; and things that defy logic go unseen by most."
Things that defy logic, but cannot be ignored, are often rationalized away.
I've seen a few things, myself, that defied logic. I've seen them since I was quite young. But they were rationalized away as overactive imagination, nightmares, etc, by well-meaning parents and grandparents. Unfortunately, I still see these things as an adult. I'm also well aware of my surroundings and level of consciousness, so I cannot rationalize them away.
But this sort of thing can make a book chilling to me. Little things that most people ignore, or pass off as inconsequential. Like "misplaced" keys. You're certain that you put them on the foyer table, where you -always- put them when you come home every night. But this morning, they're not there. You eventually find them, in an odd place. Perhaps on top of your dresser, or on the kitchen counter. You're relieved you found them, and you go on about your day without giving it another thought.
But what if it wasn't a case of you spacing them off? What if something else moved them?
And what if whatever is moving your stuff around was another life-form living in your home with you? A lifeform that is made of shadow? Perhaps it cannot really be seen by looking directly at it, but only as a hint of movement out of the corner of your eye?
And what if the reason you're so tired all the time has nothing to do with getting older, or having a busy life. What if something was feeding off of your life energy while you slept?
And what if that lifeform was malicious?