You wake in a cold sweat from a nightmare, the same one you've been having on and off for months. Who's killing you in this dream? How do they do it?
It's morning again, too damn early. Hey, how do you tell time in here again? In the far off you swear you can hear the low rumbles of motorcycle engines echoing down the main shaft, but it's probably your imagination.
Doubtful you'll get back to sleep now. What do you do?