CHARLEY: So, we find Grayle and shoot him.

DOCTOR: We do not shoot him.

CHARLEY: Or catapult him. Or feed him to the lions.

DOCTOR: We find out if he's contacted his alien masters yet, and try to stop whatever he's doing.

CHARLEY: You do always go the pretty way. I'm joking.

DOCTOR: Are you?

CHARLEY: Or we could stone him, or throw him off the wall of the fort.

DOCTOR: Charley.