The Doctor: Has anyone got a box?
Evans: I've got my tobacco tin.
The Doctor: Oh, splendid.
Evans: But then it's got tobacco in it.
The Doctor: Never mind. (dumps it in Evans' hand)
Blake: It's like a spider's web, ain't it?
The Doctor: Yes. And we're the flies, all right, but where is the spider?
Arnold: Right, I want one volunteer.
Evans: Volunteer? That's a dirty word, that is. Not me.
The master copy of this episode was wiped in or shortly after September 1969. A 16mm telerecording of the episode was recovered from Nigeria in 2013.