Enlightenment (TV story)

Synopsis
An Edwardian yacht in a deep space race around the planets. There is a double agent in the TARDIS crew. The White Guardian warns the Doctor of great danger, Turlough must finally choose sides, and at the end of the race lies the prize of Enlightenment.

Detailed Part by Part Synopsis

Plot
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Cast
The Doctor - Peter Davison

Tegan Jovanka - Janet Fielding

Turlough – Mark Strickson

The Black Guardian – Valentine Dyall

The White Guardian – Cyril Luckham

Striker – Keith Barron

Marriner - Christopher Brown

Wrack – Lynda Baron

Mansell – Leee John

First Officer - James McClure

Jackson – Tony Caunter

Collier - Clive Kneller

Crew
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Story Notes

 * The Black Guardian Trilogy began in the serial Mawdryn Undead, and continued in the previous serial, Terminus. It concludes here.
 * The original title for this story was The Enlighteners. Portions of Barbara Clegg's story were reworked by Eric Saward to fit into the Trilogy, including substituting the two Guardians for her "Enlighteners". Since there were no longer any Enlighteners as such, the story was renamed Enlightenment.
 * Every story during Season 20 had the Doctor face an enemy from each of his past incarnations. During this trilogy, the enemy was the Black Guardian, who last faced the fourth incarnation of the Doctor at the conclusion of the Key to Time saga in The Armageddon Factor (1979).
 * This story marked Valentine Dyall's final appearance as the Black Guardian. Dyall would return to the world of Doctor Who as the character Slarn in the BBC Radio 4 serial Slipback before his death in 1985.
 * This story also marks the final appearance of Cyril Luckham as the White Guardian, who was last seen in The Ribos Operation (1978). Luckham passed away on February 8th, 1989.
 * Guest star Lynda Baron (Captain Wrack) first appeared in Doctor Who in the 1966 serial The Gunfighters. See also Celebrity appearances in Doctor Who.
 * This is the only Doctor Who production to date to have been both written and directed by women, Barbara Clegg and Fiona Cumming respectively.
 * The Doctor replaces his stalk of celery with one from Captain Wrack's ship.
 * The TARDIS camera is located in the beacon atop the police box; Lieutenant Marriner climbs to the top of the ship to peer inside, but apparently cannot hear Tegan.

Ratings
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Myths
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Location Filming
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Discontinuity, Plot Holes, Errors

 * There are still a few fragments of the red jewel left after the Doctor picks them up.

Continuity

 * An article by Russell T. Davies in the Doctor Who Annual 2006 refers to the Eternals in connection with the Time War mentioned in the 2005 series. The article states that the Eternals were involved in a previous Time War with the Halldons, a powerful race first mentioned in We are the Daleks, an article by Terry Nation from the Radio Times 10th Anniversary Special in 1973. Davies' article also states that the Eternals watched the Great (and final) Time War between the Time Lords and the Daleks, and "despaired of this reality, and fled their hallowed halls, never to be seen again."

DVD and Video Releases
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Target Novelisations
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