Doctor: Don't be so defeatist. You've got two of the finest minds ever to graduate the Academy of the Time Lords of Gallifrey. There's not a puzzle in the universe we can't solve given a little time.

Missy: Two of the finest minds? Did you ever actually graduate, Doctor? I never can remember.

MASTER: Missy? Seriously, why?

MISSY: Oh, because he's right. Because it's time to stand with him. It's where we've always been going, and it's happening now, today. It's time to stand with the Doctor.

MASTER: No. Never. Missy! I will never stand with the Doctor!

MISSY: Yes, my dear, you will.

MASTER: Dying in your arms. Happy now?

DOCTOR: You're not dying. Don't be stupid. It's only a bullet. Just regenerate.

MASTER: No.

DOCTOR: One little bullet. Come on.

MASTER: I guess you don't know me so well. I refuse.

DOCTOR: Regenerate. Just regenerate. Please. Please! Just regenerate. Come on.

MASTER: And spend the rest of my life imprisoned with you?

DOCTOR: You've got to. Come on. It can't end like this. You and me, all the things we've done. Axons. Remember the Axons? And the Daleks. We're the only two left. There's no one else. Regenerate!

MASTER: How about that. I win. Will it stop, Doctor? The drumming. Will it stop?

ROMANA: K9 is a vicious robot criminal from the fifth galaxy. Aren’t you, K9?

K9: Affirmative!