I have had a couple of encounters, or sightings, with unexplainable stuff......
Once, I was standing at the sink, doing dishes, waiting for Al to get home from school (he was in K that year). Out of the corner of my eye, I caught a glimpse of something, so went over to the window to see what it was. There, in the field across the road from the house, were two people, a man and a woman, walking around, just wandering more than actually going somewhere. The woman was dressed in a long dress, blue in color, and a black bonnet........the man had on a flat-topped hat and a vest over his shirt. They just kinda vanished into thin air, while I stood there watching, and wondering what I should do.......
When Hubby got home that night, I told him what I'd seen, and he laughed, and said that his great-grandparents, who settled here back in the 1880s, must have been back to check on things.......apparently, I wasn't the first to see them out there. So far as I know, though, no one else has seen them since.....