Doctor Who – The Ultimate Adventure a force field and a time tunnel. In 2008 Big Finish Productions released "The Ultimate Adventure" as an audio drama, directed by Jason Haigh-Ellery. Doctor Who – The Ultimate Adventure Doctor Who – The Ultimate Adventure was a 1989 stage play written by Terrance Dicks, based on the long-running British science fiction television series "Doctor Who". The play was staged at twenty theatres around Britain, commencing 23 March 1989. It initially starred Jon Pertwee (who had played the Third Doctor in the series) as the Doctor. On 29 April Pertwee was ill, so understudy David Banks, who portrayed the Cyber
Enlightenment (Doctor Who) serial "Mawdryn Undead", and concluding with "Enlightenment"), the enemy was the Black Guardian, who was last encountered by the fourth incarnation of the Doctor at the conclusion of The Key to Time saga in the 1979 serial "The Armageddon Factor". The story also saw the return of the White Guardian, who had also not been seen since 1979. After penning a number of radio and TV scripts, including episodes of "Crossroads" and "Waggoner's Walk", Barbara Clegg submitted a story idea to "Doctor Who" script editor Eric Saward, an acquaintance from the BBC drama department. Interested in writing for the series,