Escape From Hell Asylum

You start to walk to the left, traveling down the hall. The air is damp and heavy and many of the electric lights have burnt out. There are some papers and x-rays on the floor. Some of them depict what look like horrible injuries. The lights above you begin to flicker on and off. The hall curves and you jump upon rounding the corner, there's something in the tunnel.

It's just an old, empty wheelchair, but it makes you feel uncomfortable. You blink for a moment and upon looking back up the wheelchair is moving every so slowly. The wheels make little grinding sounds like they haven't been moved in years. It doesn't seem to be moving in any particular direction, but you're pretty sure that it's heading toward you.