What's Going On?

I finally wake up, cold and naked except for a torn cloth around my waist. I look around my environment and see dead bodies, slash marks decorating their chests. I scream jumping backing fright, wondering what's going on. I faintly recall being told a while ago about someone who was infected with a virus that turns the person into a violent bio-weapon whenever a heartbeat is heard, and then returns back to the human state after the heartbeat is no longer heard. But that's ridiculous, stupid, nothing like that could possibly be real. Looking in a nearby mirror raises questions like why I can't remember the last few minuets, and most importantly, why is there blood on my hands and face?

Not bad huh? Tell me what you think.