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The Zero Room is gone and the Doctor's regeneration is dangerously unstable. To help him, Tegan locates the tranquil world of Castrovalva and the TARDIS heads there.

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25 minutes

Last on

Wed 6 Jan 198219:45
BBC One Wales

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Castrovalva: Part 1Season 19

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Castrovalva: Part 3Season 19

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Broadcasts

  • Tue 5 Jan 198219:00
    BBC One except Wales
  • Wed 6 Jan 198219:45
    BBC One Wales

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