Filling in the gaps that fans of the series demanded, this Doctor Who special episode explores the character of Brigadier Lethbridge-Stewart. Doctor Who (Patrick Troughton) and his team go to International Electromatics in search of a missing scientist. The Brigadier's UNIT force aids the Doctor in discovering what lies under the surface of International Electromatics and what exactly it's nefarious leader, Tobias Vaughn, is up to.

Filling in the gaps that fans of the series demanded

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