You hang up, convinced that whatever is on the other line isn't actually human. As you go to lay back down, you hear what sounds like screams from outside of someone you know. Someone who helped you stay alive. Someone that you killed at the expense of your own survival. You left him behind at his place and now you're leaving him behind at your place. I hope you can live with your choice. He won't.
You decide that going to bed is your best choice. The sounds of your friend's scream echo in your mind as you drift off.