- Doctor Who: I want to get a closer look at that Melkur creature. I have the oddest feeling we've met somewhere before.
- Doctor Who: I used to know an ancient remedy for mad dogs. I must look it up sometime. Good library here, have you?
- Tremas: What happened?
- Doctor Who: You just missed your chance of becoming Keeper yet again, but confidentially I think that you're very lucky.
- Katura: [looking at Melkur sitting on the throne] Who are you?
- Doctor Who: Your new Keeper.
- Tremas: This is no Keeper of Traken.
- Doctor Who: Well, I know it's not exactly what you had in mind, but now, I'm afraid, you're rather stuck with him.
- Doctor Who: Melkur'll be out of action for awhile. Let's try and make that a permanent arrangement, shall we?
- Nyssa: Finished?
- Adric: Yes. Now all we have to do is connect it up to the manipulator circuits.
- Nyssa: What will it do?
- Adric: Nothing, until Melkur taps the energy core of the source.
- Nyssa: And?
- Adric: Oh, all sorts of things. Time-energy will be displaced, energy will overflow, overload the control element.
- Nyssa: And Melkur?
- Adric: The source will consume itself and whoever controls it, or at least that's the Doctor's theory.