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After an encounter with the Plasmatons, Nyssa is possessed by strange aliens while the Doctor, joined by Professor Hayter, investigates Kalid's inner sanctum.

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25 minutes

Last on

Wed 24 Mar 198219:40
BBC One Wales

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Broadcasts

  • Tue 23 Mar 198219:05
    BBC One except Wales
  • Wed 24 Mar 198219:40
    BBC One Wales

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