 Williams, what is it? I don't know. You fired a shot. Yes, sir. Just as the lights went out, I'm sure I saw a figure. It looked like an old man in a white robe. It moved across the end of the corridor down that way. Flash your torch down there, Evans. Nothing there. Are you certain, Williams? I'm not certain. The lights. They're on again. We're going to get to the bottom of this. Wait, wait. What? Listen. Quiet.