We saw some amazing actresses for this part. But when Karen came through the door, the game was up — she was funny, clever, gorgeous and sexy. Or Sco… - Steven Moffat

As we all know, it is the proper duty of every British subject to come to the aid of the TARDIS.

I want people to stop saying it. It is witless. It is appalling that in the face of people's genuine tragedy and traumatic loss, you trot out a stock phrase. What is the matter with you? "Thoughts and prayers?" How about you send money? I mean, how about you send some help? How about you do something? "Thoughts and prayers" is, "Nevermind. Oh, well." I thought that if I can just get it in there like, "Exterminate," as what evil robots say, then maybe people will stop saying that idiotic phrase.

We've kind of got to tell a lie. We'll go back into history and there will be black people where, historically, there wouldn't have been, and we won't dwell on that. We'll say, 'To hell with it, this is the imaginary, better version of the world. By believing in it, we'll summon it forth'.