[s2e9] The Satan Pit -

: Early drafts featured the Slitheen (from Series 1) as the enslaved race on Krop Tor. Russell T Davies later replaced them with the newly created Ood to avoid detracting from the human characters and because new masks could be made within the budget.

: Writer Matt Jones originally intended to hide Toby’s possession until the very end of the episode. Russell T Davies requested the reveal happen earlier to avoid a resolution that felt too abrupt.

: When the budget for a CGI creature was in doubt, drafts considered having the Beast appear as a withered old man , a giant disembodied eye , or a creepy young girl . Ultimately, a full CGI model was used. Notable Dialogue from the Script [S2E9] The Satan Pit

: "I've seen fake gods and bad gods and demi-gods... But if I believe in one thing... just one thing... I believe in her!".

The draft text includes several famous lines, such as the Doctor's monologue about his beliefs and his final description of himself and Rose: : Early drafts featured the Slitheen (from Series

: The final line of the script where the Doctor identifies himself and Rose as "the stuff of legend" was the final scene filmed by Billie Piper as a series regular.

: The story was initially developed under the umbrella title "Satan Pit" . Key Revisions : Russell T Davies requested the reveal happen earlier

: Extra dialogue was written to explain why the deep cavern floor was covered in liquid (poison rain/snow from subterranean gases) due to the real-world snowy conditions during the quarry shoot. 2026 Target Novelization