En route to Gallifrey, the TARDIS passes through a strange phenomenon and ends up in an alternative universe called E-Space, where a small but sustainable civilisation of humanoids called Alzarians live between a river and a grounded spaceship, Starliner. It is an oligarchy ruled by three senior colonists known as Deciders. A sudden series of irregular events are interpreted by Decider Draith as a bad omen and the colonists move into the Starliner to protect themselves. One of the younger colonists, Adric, watches Draith drown in the river. His last words are "Tell Dexeter we've come full circle!" Adric heads into the forest in panic, finding the TARDIS, where the Doctor and Romana take him in.

The other Deciders order the Starliner sealed and select a new Decider. Humanoid Marshmen and scuttling Marshspiders begin to appear. The Doctor gains entry to the Starliner, followed by a Marshchild. Both are found and taken to the Three Deciders. The Doctor is appalled when chief scientist Dexeter starts to perform vivisection experiments on the Marshchild.

Romana is bitten by a Marshspider and starts to change, seemingly possessed. The Doctor uses a protein serum to cure her and they determine the ship has been maintained for 40,000 generations by a species that has three aspects: spiders, Marshmen, and Alzarians. They are all the same species and thus have come "full circle."

It is accidentally deduced that oxygen in its pure form is toxic to the Marshmen and this non-lethal defence is used to force the Marshmen out of the Starliner. During their retreat, Adric stows away in the TARDIS as his fellow colonists pilot the craft away from Alzarius.

Conception and writing edit

Teenage fan Andrew Smith had previously submitted a number of storylines to Doctor Who script editors, who received them with interest. Smith initially submitted Full Circle under the title The Planet That Slept. Recently hired story editor Christopher H. Bidmead was impressed by the idea, and commissioned the script for Part One on February 25, 1980, followed by the next three episodes on March 31. Producer John Nathan-Turner and Bidmead were planning to introduce a new companion for the Doctor named Adric, whom they asked Smith to introduce in the serial. The two had developed a character document on January 30, which outlined that Adric was "fifteen, small for his age, wirey [sic] and strong, with short straight black hair." To reflect his origin in a parallel universe, Adric's name was chosen as an anagram of quantum physicist Paul Dirac's surname, as Dirac had predicted the existence of antimatter. Part of the original concept for Adric would have been to present a repetition of the Doctor's own backstory, with Adric's home planet initially named as Yerfillag, or Gallifrey (the Doctor's home planet) backwards.^[2] Bidmead had also previously suggested "a trilogy of stories with a linking theme" to Nathan-Turner, outlining the concept of a parallel universe called E-Space in a document on June 12.^[3]

The story was repeated on BBC1 (except BBC1 Wales) across four consecutive evenings from Monday to Thursday, 3–6 August 1981, achieving viewing figures of 4.9, 4.2, 4.6 and 6.4 million viewers respectively.^[5]

Working titles for this story included The Planet That Slept.^[6] At the time of writing this story, Andrew Smith was a seventeen-year-old who achieved his lifelong ambition to write for the show.^[7]

The exterior locations for Alzarius were filmed at Black Park in Buckinghamshire.^[8]

In print edit

A novelisation of this serial, written by Andrew Smith, was published by Target Books in September 1982. The novelisation opens with the Starliner crashing on Alzarius. An audiobook of the Target novelisation was released on 29 January 2015 read by Matthew Waterhouse and John Leeson.

Home media edit

Full Circle was released on VHS in October 1997. The DVD was released in January 2009 as part of a boxed set called The E-Space Trilogy. This serial was also released as part of the Doctor Who DVD Files (issue 85) in April 2012. Paddy Kingsland's incidental music for the serial was released as part of the compilation album Doctor Who at the BBC Radiophonic Workshop Volume 4: Meglos & Full Circle in 2002. In 2019, the story was released on Blu-ray as part of the Doctor Who Collection Season 18 box set.

Academic Studies edit

A book on the serial, written by New Zealand academic John Toon, was released by Obverse Books in January 2018 as part of its Black Archive series.^[9] It won the Sir Julius Vogel Award in the category of Best Professional Production/Publication in 2019.^[10]

• Full Circle at BBC Online

Target novelisation edit

• Full Circle title listing at the Internet Speculative Fiction Database