I am not of that particular persuasion, but I can understand why some people might believe in ghosts.  We had a fog out in our field just around dark last Wednesday.

It could almost be seen rising up and resolving itself into a shape

Somebody without the benefit of a good Biblical grounding, and without electric lights, might be able to convince themselves that there was something out there.

There are reports of arrowheads being found on this piece of ground.  Who’s to say that there wasn’t a person to go along with them, coming back to claim what’s theirs?