History Trivia / DoctorWhoS2E8TheChase

* RealitySubtext: Creator/WilliamHartnell became friends with Creator/WilliamRussell and Creator/JacquelineHill through the show’s run. So the melancholy felt Doctor seeing Ian and Barbara go was real, especially since Hartnell was now was the only original cast member still left.

* ProductionNickname: During rehearsal the three Fungoid costumes were given nicknames to avoid confusion: Fungoid Fred, Toadstool Taffy and Mushroom Malone.
* RealitySubtext: The Doctor's sadness in saying goodbye to Ian and Barbara was not entirely down to good acting. Creator/WilliamHartnell had become good friends with Creator/WilliamRussell and Creator/JacquelineHill and was genuinely saddened to see them leave.

* ScrewedByTheLawyers: Music/TheBeatles clip was missing from some releases due to rights issues. It is on the UK VHS release and the Region 2 DVD.

** Creator/TerryNation's original draft was quite different:
*** The denizens of Aridius were originally envisaged as ugly, hunchbacked creatures.
*** The Fungoids were originally introduced on Aridius, as opposed to confining them solely to the Mechanus sequences.
*** The Doctor's explanation of the haunted house existing in a realm of human thought was in fact Nation's initial concept for the segment, which Creator/VerityLambert felt was straying too far from the conventional ''Doctor Who'' approach.
*** Baron Frankenstein was at one point included in the haunted house scenes, while the Grey Lady was a late addition.
*** Nation discarded several further ideas for the serial, including sequences set in ancient Egypt (where the first of the Great Pyramids would be erected over the remnants of a destroyed Dalek), the planet Stygian whose inhabitants were invisible, and the mist-shrouded world of Vapuron. These ideas would subsequently be recycled in "[[Recap/DoctorWhoS3E4TheDaleksMasterPlan The Daleks' Master Plan]]".
** In the original storyline, the TARDIS crew would witness on the visualiser Shakespeare discussing with his wife the possibility of allowing Francis Bacon to use his name on Bacon's plays, as well as a speech by UsefulNotes/WinstonChurchill; Ian and Vicki would see through the sands the vast underground Aridian city; and Ian and Barbara would not return home to Earth at the end of the serial.
** Music/TheBeatles were originally planned to appear as old men performing in the 21[-[[superscript:st]]-] century (and were reportedly interested in doing so), but this proposal was apparently vetoed by their manager Brian Epstein. This turned out to be more fortunate in the long run, as only Music/PaulMcCartney and Music/RingoStarr ever made it to old age, and the recycled ''Series/TopOfThePops'' footage prevented the band's appearance on that show from being totally lost.
* WordOfGod: Creator/RussellTDavies has suggested that the Daleks' arrival on the Empire State Building planted the idea for their eventual influence over its construction in "[[Recap/DoctorWhoS29E4DaleksInManhattan Daleks in Manhattan]]".

* YouLookFamiliar:
** Within the same story, Creator/PeterPurves plays both the obnoxious American tourist Morton C. Dill and the new companion Steven Taylor.
** Edmund Warwick (the Robot Doctor) had previously played Darrius in "[[Recap/DoctorWhoS1E5TheKeysOfMarinus The Keys of Marinus]]".

* MissingEpisode: The clip of Music/TheBeatles is all that survives of that particular ''Series/TopOfThePops'' episode. And even if it hadn't been "withdrawn, deaccessioned, and junked", it would still be a BannedEpisode because that's Creator/JimmySavile introducing them.

** Music/TheBeatles were originally planned to appear as old men performing in the 21[-[[superscript:st]]-] century (and were reportedly interested in doing so), but this proposal was apparently vetoed by their manager Brian Epstein. This turned out to be more fortunate in the long run, as only [[Music/PaulMcCartney two]] [[Music/RingoStarr Beatles]] ever made it to old age, and the recycled ''Series/TopOfThePops'' footage prevented the band's appearance on that show from being totally lost.

* FanNickname:
** Some fans refer to the Daleks' time machine as a "DARDIS". It's alleged that this was actually how Creator/TerryNation himself referred to it in his scripts, though this appears to be a myth.
** The Dalek Ian traps in a hole is nicknamed Fred, thanks to him WaxingLyrical to make a BondOneLiner referencing the novelty song "Right, Said Fred" (incidentally, the vocalist on that song was one Bernard Cribbins, who go on to play Tom Campbell in ''Film/DaleksInvasionEarth2150AD'' the following year as well as Wilfred Mott in the show proper during the Revival Series).

* ScrewedByTheLawyers: Music/TheBeatles clip was removed from the VHS release due to rights issues. It is on the Region 2 DVD.

** Music/TheBeatles were originally planned to appear as old men performing in the 21[-[[superscript:st]]-] century (and were reportedly interested in doing so), but this proposal was apparently vetoed by their manager Brian Epstein. [[HarsherInHindsight Probably for the best, though.]]

** Darrius (the Robot Doctor) had previously played Darrius in "[[Recap/DoctorWhoS1E5TheKeysOfMarinus The Keys of Marinus]]".

* YouLookFamiliar: Within the same story, Creator/PeterPurves plays both the obnoxious American tourist Morton C. Dill and the new companion Steven Taylor.

* RealitySubtext: The Doctor's sadness in saying goodbye to Ian and Barbara was not entirely down to good acting. Creator/WilliamHartnell had become good friends with Creator/WilliamRussell and Jacqueline Hill and was genuinely saddened to see them leave.

* FakeAmerican: Oh boy... the accents are just ''horrible.''[[note]]Although interestingly, Peter Purves' accent that he used for the actual American character is different to the one he would later use for Steven pretending to be American.[[/note]]

* RecastAsARegular: Peter Purves went from playing a one-shot comic relief character to a main companion. ''In the same story''.

* YouLookFamiliar: Within the same story, Peter Purves plays both the obnoxious American tourist Morton C. Dill and the new companion Steven Taylor.

* RealitySubtext: The Doctor's sadness in saying goodbye to Ian and Barbara was not entirely down to good acting. Creator/WilliamHartnell had become good friends with William Russell and Jacqueline Hill and was genuinely saddened to see them leave.