Turning twice to see the darkness and the light, Keeley lost track of the zombie that had been running along behind her at surprising speed. Somehow he slipped in to the shadows as her light-blinded eyes took too long to adjust. No matter. Keep moving. She had to keep moving. She'd learned that early on. They were too slow to give chase. Except this one. Something about they way he moved led her to think that he was different. Faster, yes. But also more precise.
The bridge ahead of her looked empty. Still, she approached it warily, knowing that appearances could be deceptive. Behind her a dog howled. They weren't interested in the dogs. She couldn't figure out why not. They ate everything else.