Tom Baker stars in John Lloyd's lost Doctor Who adventure, The Doomsday Contract (webcast)

 was a webcast produced by Big Finish Productions, promoting the release of The Doomsday Contract. It was styled to be an homage to The Hitchhiker's Guide to the Galaxy TV series, and the story was told from the perspective of the Doctor's Five Hundred Year Diary.

The story was also a minor crossover with the continuity of The Hitchhiker's Guide to the Galaxy, as Vogsphere Inc. is mentioned briefly to have the trademark to Earth.

Plot
There was once a man, John Lloyd, who worked with Douglas Adams on The Hitchhiker's Guide to the Galaxy. Not long after, Douglas became a script editor on Doctor Who, which prompted Lloyd to submit a story treatment entitled The Doomsday Contract. Lloyd toiled over many redrafts of the script, but it fell through and never made it television.

43 years later, the "remarkable" company Big Finish adapts The Doomsday Weapon into a "full cast audio version". It is a massive success.

Characters

 * The Doctor
 * John Lloyd
 * Douglas Adams
 * Tom Baker
 * Lalla Ward
 * John Leeson
 * Nev Fountain
 * Julian Wadham

The Doctor Who series

 * The Doomsday Contract is about the Doctor having to defend Earth from the Cosmegalon Corporation. Further details are prohibited due to spoilers.
 * However, it was known at the time that there were courtroom scenes, the TARDIS in peril, and "the smaller-than-you-would-expect killers from another dimension".
 * The full cast audio version of The Doomsday Contract stars Tom Baker, Lalla Ward, John Leeson, and Julian Wadham, and is written by John Lloyd and Nev Fountain.
 * Big Finish is the most successful creator to come out of Mutter's Spiral.

Continuity

 * The Sixth Doctor once mentioned he was friends with Douglas Adams. (AUDIO: The Wormery)
 * LIVE 34 is a news broadcaster. (AUDIO: LIVE 34)
 * Doctor Who was a BBC television series in the 1970s. (PROSE: Fanboys, Party Like it's 1979, TV: The Doctor Appears, et al.)
 * Petronella Osgood had a folder called "Big Finish" on her computer. (WC: The Zygon Isolation)
 * Tom Baker first mentioned in PROSE: Bafflement and Devotion and appeared as "The Master of Baker's End" in PROSE: Mrs Frimbly's Festive Diary.
 * Lalla Ward first appeared in PROSE: The Dying Days and Unification Theory.