I cursed under my breath as I jogged back to campus. Midnight had come and gone. The humanities building loomed dark and empty. I had left my laptop in the lecture hall. Stupid mistake. The thesis files were on it. I needed them for tomorrow.

The side door was unlocked. I slipped inside. The halls were black. Only the exit signs glowed red. 

My footsteps echoed. I pushed open the door to the big lecture hall.

It was pitch dark. No lights on. I pulled out my phone and turned on the flashlight. The beam swept across the rows of desks. Empty. My spot in the front row looked the...