Season 18

The Fourth Doctor's farewell season saw the Master return and Romana and K-9 elect to remain in E-Space. There were new companions in the shape of Adric, Nyssa and Tegan Jovanka.

  • Logopolis

    The Fourth Doctor is warned of his own demise but must save the universe from the Master.

    Image for Logopolis
  • The Keeper of Traken

    An ancient evil threatens the peaceful world of Traken... the Master!

    Image for The Keeper of Traken
  • Warriors' Gate

    The TARDIS is drawn to an empty void by Biroc, a time sensitive Tharil.

    Image for Warriors' Gate
  • State of Decay

    Trapped in E-Space, the TARDIS lands on a world where three Lords rule from their tower.

    Image for State of Decay
  • Full Circle

    Landing on Alzarius the Doctor and Romana discover the descendants of a crashed starliner.

    Image for Full Circle
  • See all episodes from Season 18

Last on

Logopolis Part 4

4/4 With the fate of the universe at stake, the Doctor and the Master must collaborate.

Thu 3 Dec 1981 17:40 BBC Two

See all previous episodes from Doctor Who

New Series: Doctor Who Extra

“Here we go again…”

Find out about the new series which is exclusive to BBC iPlayer.

Buy online

Available on: DVD or Video download

From suppliers including: Amazon, BBC Shop, iTunes

Where to buy

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.

Added. Check out your playlist Dismiss