(On board the Cybermen's craft, the Doctor and Polly are imprisoned together; the Doctor is in another chair-cage next to Polly. Both have their hands bound.)
POLLY: Doctor... Doctor?
(The Doctor barely has enough energy to raise his head to reply.)
DOCTOR: Hmm... yes? What is it,
POLLY: Engines! They're not going to take off, are they?
(The Doctor listens to the low, throbbing background vibration.)
DOCTOR: No, no. Wait! Feel the vibrations.
Perhaps it's coming from Mondas!
POLLY: Do you mean, Mondas?
DOCTOR: This spacecraft receives its energy from Mondas. Perhaps it's absorbing too much.
POLLY: You don't mean it's going to blow up, do you?
DOCTOR: No, I don't know, child. It's an unknown power...
POLLY: Doctor, I'm scared!