The Great Beyond

TEGAN: This is you all over Doctor, you're always thinking about the adventure, you never stop to look after the people you're supposed to care about!

DOCTOR: That's not fair.

NYSSA: The Doctor was trying to protect you Tegan.

TEGAN: Only as far as it suited his own interests.

TEGAN: I can't go back there Doctor, you can't let me go back there.

DOCTOR: I won't.

ADRIC: The Doctor can find a way out of this Tegan, you know that, he'll never let any of us down.