ChicagoEpguides reported that at 0:22:42 the voiceover from Howard da Silva at the beginning of episode 2 is mistakenly retained ("The signal from the missing ship grows stronger as the crew plummets to the underworld.")

Outro: Next week, The Doctor returns home to Gallifrey to claim his position as president. But a most bizarre chain of events will prove the best laid plans of mice and men and Time Lords gang aft agley. Be with us next Sunday at 11 for "Invasion of Time." [source: ChicagoEpguides]