Window Ghost Picture

"I have been taking landscaping photos of houses that I work on...when taking photos of the yards; the houses have been in the background. A neighbor of one of the houses next door - was outside one day when I was freaking out looking at the digital viewer seeing someone standing in the window of a house that was empty. They asked me to take a some photos of their house and I did...and there it was. That is an architectural window...dead space behind it, if you will pardon the pun. I have three photos of it; one it's looking up, one it's looking out, and the last one looks like it's looking at me...completely freaked us both out. Since the houses belong to my employers, I cannot show the full house or give a location other than Missouri."