A while back, you'd stumbled upon an empty house in the middle of nowhere. Probably belonged to some hippie who wanted to live off the grid, but the owner is long gone now. The electricity was turned off a while ago, but there was no sign of infected and you'd found some non-perishables. It seemed like a decent place, so you decided to camp out for as long as you could. Your food ran out a few days ago... you're on your last legs now.
You're camped out on the second floor when you hear someone bust the door open. He's quiet. He rummages around the first floor, probably looking for food and finding nothing. That's when he starts walking up the stairs, getting closer to you. He stops at the top of the stairs. You can't see his face, but you can hear him clearly.
"I can see you."