Sensorites (episode 1)
Strangers in Space
So the crew don't now where the TARDIS has landed and all the signals
are wonky, so they open the doors, but first a quick reminder of all the
adventures you missed:
IAN: There's one thing about it, Doctor. We're certainly different from when we started out with you.
SUSAN: That's funny. Grandfather and I were talking about that just before you came in. How you've both changed.
BARBARA: Well we've all changed.
SUSAN: Have I?
BARBARA: Yes.
DOCTOR: Yes, it all started out as a mild curiosity in a junkyard, and
now it's turned out to be quite a, quite a great spirit of adventure,
don't you think?
IAN: Yes. We've had some pretty rough times and even that doesn't stop
us. It's a wonderful thing, this ship of yours, Doctor. Taken us back to
prehistoric times, the Daleks.
SUSAN: Marco Polo, Marinus.
BARBARA: And the Aztecs.
DOCTOR: Yes, and that extraordinary quarrel I had with that English
king, Henry the Eighth. You know, he threw a parson's nose at me.
BARBARA: What did you do?
DOCTOR: Threw it back, of course. Take them to the Tower, he said. That's why I did it.
BARBARA: Why?
SUSAN: The Tardis was inside the Tower.
I'd have preferred that last one - unseen - over some episodes of Keys
of Marinus tbh. The Doctor and crew are no longer adversaries, they are
now firmly friends, joking about historical murderous tyrants.