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
A recording plays of a man summarising the information recorded in the Doctor's Five Hundred Year Diary concerning The Doomsday Contract.

According to it, it 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.

As the camera pans away, it is revealed that it is an astronaut drifting in the void of space who has been listening to the recording. He lets go of the device as it goes.

Cast

 * Nicholas Briggs - Narrator/The Doctor

Characters

 * Astronaut
 * 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.