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Classic Who S18 • Serial 7 · (4 episodes)

Logopolis

3.87/ 5 278 votes

First aired Saturday, February 28, 1981
Production Code 5V
Directed by Peter Grimwade
Runtime 100 minutes
Time Travel Present
Synopsis

The Doctor goes to Logopolis to repair the TARDIS' chameleon circuit, not knowing that a shadowy watcher is spying on him.

Meanwhile, his old enemy the Master has only recently gained secure longevity by possessing the body of Tremas, and revels in his safety. He has plans of his own for the planet of mathematicians, Logopolis, and a plan that could spell doom for the entire universe.

4 Episodes:

First aired Saturday, February 28, 1981
Runtime 25 minutes
Directed by Peter Grimwade
UK Viewers 7.7 million

Synopsis

Deciding to repair the TARDIS' chameleon circuit, the Doctor goes to Earth to find a real police box. But an old enemy is one step ahead of him.

First aired Saturday, March 7, 1981
Runtime 25 minutes
Directed by Peter Grimwade
UK Viewers 7.7 million
Appreciation Index 61

Synopsis

The Doctor, aware that his time may soon be ending, travels to the Logopolis where a series of fateful events are set in motion.

First aired Saturday, March 14, 1981
Runtime 25 minutes
Directed by Peter Grimwade
UK Viewers 5.8 million

Synopsis

With Nyssa from Traken unexpectedly rejoining the group, Adric aids the Monitor of Logopolis in trying to save the Doctor before time runs out. The Master, at liberty to prepare, is finally ready to reveal his true target, which unknowingly sets off the biggest catastrophe of all time.

First aired Saturday, March 21, 1981
Runtime 25 minutes
Directed by Peter Grimwade
UK Viewers 6.1 million
Appreciation Index 65

Synopsis

With the universe collapsing, the Doctor forms an uneasy alliance with the Master to save it. In case all does not go well, the Watcher takes the Doctor's companions to a safe place, but his plans for them don't stop there. The one hope for all lies back on Earth.

Ratings are from TARDIS Guide members only.

Other adaptations of this story: