DOCTOR: Well, look around you. It's dark.

SAM: So? It tends to do that at night-time. You've probably been too busy saving planets and stuff to notice before.

The Doctor moved across to the arch on the far side of the room, holding his candle above his head like a tour guide.

'Here we have the spacious master bedroom,' Sam said, squeezing into the alcove behind him. She eyed the walls distastefully. 'Plenty of running water, though unfortunately no taps.'