Its always there. We never see it completely, but its there all the same. That thing we see in the dark corners as we turn our heads, that silhouette of something that watches us, never visible when we look again, only in the corner of our eyes, probably a figment of our imaginations, but maybe not. The fear of falling asleep is too great for some, because of that thing in the corner. It watches and waits for us to stop moving, and when we finally stop, it comes and takes our life away. That is what it is, Death.