One Way Out

You ran to Mrs. McNeil's classroom. It felt like a safe place. There was no one inside. You walk inside, glancing at the room. So many memories... memories with your classmates. Just your classmates. Everyone that was from this class was still alive, not black, oily smoke. You turn the problem over in your mind. Why and how did everyone just disappear? What's up with all these murders?
You heard footsteps nearing.