- Isobel: Well, the answer's simple, surely. Go and get some proof.
- Brigadier Lethbridge-Stewart: And how do I prove that in the sewers of London there are creatures from outer space waiting to attack us? Go and get one?
- Zoe: You wouldn't stand a chance against them, Isobel.
- Isobel: Ah, you wouldn't have to go anywhere near them.Photograph them.
- Brigadier Lethbridge-Stewart: That's not a bad idea... Now wait a minute, it'd be pitch-dark down in those tunnels.
- Isobel: You could use infrared film, a twenty-five filter on a thirty-five mil camera with a telephoto lens, and why, you could take frame after frame without getting anywhere near them.
- Brigadier Lethbridge-Stewart: Is all that gibberish or do you really know what you're talking about?
- Isobel: Of course I know.
- Brigadier Lethbridge-Stewart: If you're right, it could well be the sort of proof I need to get some action.
- Isobel: Well, all I need is my camera from the house and then I'm all set.
- Brigadier Lethbridge-Stewart: Now, wait a minute, this is hardly a job for you.
- Isobel: Why ever not?
- Brigadier Lethbridge-Stewart: Well... you're a young woman. This is a job for my men.
- Isobel: Well, of all the bigoted, anti-feminist... cretinous remarks!
- Brigadier Lethbridge-Stewart: This is no job for a girl like you. Now that's final.
- Isobel: Oh you... you man!
- Brigadier Lethbridge-Stewart: I'll get in touch with my photographic unit and get them onto it.
- [the Brigadier leaves]
- Isobel: Oh, that stupid bigoted idiotic...
- Jamie: Ah, well he's right, you know.
- Zoe: Jamie McCrimmon!
- Jamie: Well, he is!
- Zoe: Just because you're a man you think that you're superior, do you?
- Jamie: Now I didn't say that. Of course, it's true.
- Zoe: Is it really?... Right... Coming, Isobel?
- Isobel: What a splendid idea.
- Jamie: Where are you going?
- Zoe: Do you think we should let him come with us?
- Isobel: Oh, I don't know. Men aren't much good in situations like this.