lack, and are jealous of, one thing: the ability to live, and die." The hollowness of immortality was a thread that ran through Season 20, with the earlier story Mawdryn Undead showing Mawdryn trapped in an endless cycle of painful regeneration, while in The Five Doctors, Borusa's prize of immortality results in little more than a living death. The horror of eternal life is brought home when the Black Guardian threatens Turlough with immortality as a punishment for failure, something that drives him to try and commit suicide rather than face eternity. Broadcast Enlightenment was first broadcast in a twice-weekly slot on BBC One during the first two weeks of March 1983. The story episodes averaged 6.8 million viewers, with the highest viewing figures being 7.3 million for the final episode. The episodes averaged 67.5% on BARB's Appreciation Index, with Part Four once again achieving the highest figures. Archive The BBC holds all four episodes on D-3 tape, transferred from the original 2" videotapes. Reception Reviewing the story for Doctor Who Magazine's 200 Golden Moments special edition, Jeremy Bentham described it as being epic in scale, suggesting it played to the original strengths of the series; "performance, period set design and claustrophobic mood...". He likens Enlightenment to the work of Stanley Kubrick, saying "...it felt grand, it felt lonely, and yes, it felt epic." On reappraising the story for the same magazine following its release on DVD, Gary Gillatt was equally as effusive, calling it "...one of Doctor Who's finest serials." He highlights the performance of Keith Barron as Captain Striker as being "a master class of under-stated menace" and "pitch perfect", juxtaposing this with the over-the-top pantomime villainy of Lynda Baron as Captain Wrack, with the two captains balancing each other out perfectly. Writing for the Radio Times, Mark Braxton was less enamoured of some of the performances, suggesting that Baron and Valentine Dyall turn in 'hammy' interpretations of their characters, while Leee John "...makes heavy weather of the simplest activities: helming the ship seems to require the most bizarre posturing." He had mixed views on the story as a whole, saying that "Enlightenment has promising components that come together and briefly create a little magic, then vanish again, like ships that pass in the night." DVD Talk's John Sinnott had similarly mixed views on the serial, although conceding that "...While it doesn't all succeed, they give it a