PS It’s ‘The Auld Empty Barn’. as in, ‘There was nothing in it.’

10/10 for Dad’s Army reference.

The Mezzotint, by MR James. I’m 52, and read this as a kid, and it scared the crap out of me. It’s a story that’s been done a hundred times now, but when it was written (1904) it was a new idea - a picture changes, but it only changes when you don’t look at it. Ugh. Still creeps me out thinking of it.