- The Doctor: [examining Turlough's brand] Does everyone from Trion have this mark?
- Turlough: No. You have to be very special to wear the Misos triangle.
- Turlough: You have been cheated by the false Outsider. The Doctor is no enemy. He's the rightful custodian of the box.
- The Doctor: When we arrived you expected to find Trions here. Why?
- Turlough: The triangle there in the ruin.
- The Doctor: If this is an abandoned planet, what was your father doing here?
- [Turlough doesn't answer]
- The Doctor: All right, but if you're holding back anything that will aid the Master, our friendship is at an end. Is that understood?
- Turlough: Yes, Doctor.
- The Doctor: Mmm. Trace elements of numismaton gas. Very useful for an injured Time Lord who can't regenerate. Now why would he want the gas in such quantities?
- Turlough: Perhaps he plans to bottle and sell it.