CLARA: What are you doing?

MISSY: Murdering a Dalek. I'm a Time Lady. It's our golf.

[Battlefield]

YOUNG DAVROS: Help me! You can’t leave me, you promised. You said I had a chance.

(The TARDIS materialises behind him.)

YOUNG DAVROS: Who are you? I don’t get it. How did you get there?

DOCTOR: From the future.

YOUNG DAVROS: Are you going to save me?

DOCTOR: I’m going to save my friend the only way I can. Exterminate!

(He blasts all the hand mines to oblivion.)

DOCTOR: Come on, I’ll take you home.

YOUNG DAVROS: Which side are you on? Are you the enemy?

DOCTOR: I’m not sure that any of that matters, friends, enemies. So long as there’s mercy. Always mercy.

(The Doctor holds out his hand. The boy Davros takes it and they walk away together.)