Ooh, in a bit of weirdness, yesterday I wanted the prompt to be ghost images, but a search on flickr didn’t get me anywhere. Then today, I logged on to flickr and saw this at the bottom of my log in page. Almost creepy. The photo comes from The National Media Museum (spirit photographs of William Hope) on flickr.
So for today, write a story involving either a ghost or a trace of an image/memory left behind by a passing event.