A jump-scare! It's spooky Halloween season! Why do those scary movie mirror ghosts and monsters always show up at the worst times? Whether it's a horror, slasher, psychological thriller or some kind of art house piece that swears it's not a horror movie but, like, obviously really is-- there always seems to be someone quickly popping up in a reflection where they shouldn't. But maybe it's best they don't overstay their welcome after all...