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Watch Doctor Who Season 18 Episode 21 Online

  • 7.864/10
  • COUNTRIES: United Kingdom
  • Subtitles: English

The planet Traken. The Traken union is a society living in perfect harmony, watched over by the powerful but benign Keeper. But now the Keeper is dying, and he senses a great evil within his protectorate. Can the Doctor help him discover the secret of the Melkur?