A couple weeks ago I noticed a strange hand print on the stairs going up from my basement. It was dark grey, almost black, as if someone had dipped their hand in ash and then swiped it across. It looked sort of like a human's, except the "finger" part was longer, before it stopped and didn't go into the "palm" part. The fingers had different kinds of sections, and one of my friends commented it looked like someone with giant claws had pressed against the side of the wall, and another one said it looked like a long-fingered skeleton hand. I tried rubbing it off but it was extremely difficult, and I only manged to smudge it after a while. I decided to keep it up so I could look at it more. A couple days later I noticed more ash-colored hand prints near the bottom of the stairs. This time there was more of them - as if they had brushed thier hand across it many times, making it almost impossible to see the fingers through the grey smudges. I noticed both of them were about the same heigh from the step they were closest to - about as high as a small child's, much too large for an animal but short for a human.
Spooky, eh? It's scaring me out of my wits half the time. Does anybody have an idea of what it could be?

