Harvard Ghost

I do not know what the blurry thing close to the camera is. It is not in any of the other pictures on the negatives, nor was it there when I was shooting....And since the photo was taken with a fast shutter speed if it was a person closer...they still wouldn't be that blurry...
So, I'm going to go out on a limb here and say this is a photograph of a ghost! Heheheheh.