Los Chimpos Ride Again

Without hesitation you lash out, driving your fist into the zombie's skull.
He rocks back on his heels and stumbles backwards, his hand grasping for the handrail that is attached to the wall behind him.
You can see now that this office is directly at the top of short flight of stairs and the zombie teeters on the very top step.
His milky eyes settle on yours and he reaches out with one hand...