We recently moved into a new house temporarily, and before we moved in we took some pictures of it. We took some pictures of the inside, and then the outside. We got home, and as I was looking over the pictures, I noticed something. We have studying this picture for weeks. I just wanted to get everyone elses opinions on it. Please note that there was no one at all in the house at the time.
Here is a cutout of the picture without any zoom. The window in the back door:

Here it is again, with some zoom:

And again, with more zoom. If you look closely, you can see more than one person, besides the obvious one.

By "obvious one", I mean this one:

Ok, there ya go. Let me know what you guys think about this. Is it a "spirit" or "ghost" or is it just light reflecting, or shadows?