Flatline

DOCTOR: I don't suppose it really matters now. You are monsters. That is the role you seem determined to play. So it seems I must play mine.

(The Doctor steps out of the TARDIS. Clara, Rigsy and Fenton come down the ladder.)

DOCTOR: The man that stops the monsters. I'm sending you back to your own dimension. Who knows? Some of you may even survive the trip. And, if you do, remember this. You are not welcome here. This plane is protected. I am the Doctor.

(He turns, and Clara throws him the sonic screwdriver.)

DOCTOR: And I name you The Boneless.

CLARA: I'm the Doctor.

DOCTOR: Don't you dare.

CLARA [OC]: Doctor Oswald.

CLARA: But you can call me Clara.

RIGSY: I'm Rigsy. So er, what are you a doctor of?

DOCTOR: Of lies.

CLARA [OC]: Well, I'm usually quite vague about that. I think I just picked the title because it makes me sound important.