- The Doctor: If it's any consolation, I may just know how to stop it.
- Commander Vorshak: When I want your help I'll ask for it.
- Vislor Turlough: [rushing in and holding Commander Vorshak at gunpoint] The Doctor and Tegan - where are they?
- Commander Vorshak: They're safe and contributing to the defense of this base, as you are.
- Vislor Turlough: [taken aback] Sorry?
- Commander Vorshak: You're volunteering your services to defend this bulkhead.
- The Doctor: The myrka is a creature of the inkiest depths - or WAS until the Silurians tinkered with its biology. Anyway, it has little tolerance to light and hopefully none at all to ultraviolet rays.
- Tegan Jovanka: Can you be sure?
- The Doctor: No, Tegan. Perhaps you should ask it nicely to go away?