One of us - Dailyprompt

The night was cold inside the old school. We had locked every door, hoping that the zombies wouldn't find us here.

We tried hard to make less noise. It was quiet... until we heard breathing — soft, heavy, coming from the dark corner on the side.

"Who's there?" I asked, my voice broke.

Aaron looked pale. "I'm fine, I'm fine," he whispered, but his eyes looked strange and distant.

When morning came, I saw that his bed was empty. We heard slow footsteps coming from outside the door, then a low groan.

I turned to Mia, but she was already staring at the door, smiling faintly.
"Don't open it," she said softly. "He's one of us now."

Thanks for reading :)