A Pale Mark

I stepped out from behind the boot rack, looking closely along the hallway floorboards. You asked if I had seen a white stickman walking, right? I kept very still, watching for any motion down the long corridor. Nobody was moving, but near the baseboard corner, I noticed a tiny, faint line of white powder dusted along the dark wood grain. I crouched down and touched it very softly with one finger tip... It was dry and chalky, like footsteps left behind in a hurry. I sat down against the wall to keep watch over the mark. Maybe someone really did walk past here, don't you think?