The Paradox Moon (short story)

The opening scene dates the Year That Never Was as beginning on 23 June 2007. Apart from being a direct reference to the original airdate of The Sound of Drums, the given year is incorrect.
Dave Rudden stated in a Reddit AMA that he intended the past identities of Siblings Same and Different to be mysteries without answers.^[1] Sibling Same is described similarly to the boy who tormented the Eighth Doctor in Unnatural History.

Continuity[edit | edit source]

Sibling Same visits the paradox machine at the start of the Year That Never Was. (TV: The Sound of Drums)
Same and Different watch River Song run into the TARDIS, knowing it will shortly explode. (TV: The Pandorica Opens)
Same and Different are animated by paradox energy. (PROSE: The End of the Beginning)
Hanging in the house is a replica of Jacques-Louis David's painting "Napoleon Crossing the Alps" with Napoleon riding a stegosaurus. (PROSE: Canaries)
The Siblings visit timelines where Donna Noble never existed, (TV: Turn Left) where Clara never died, (TV: The Name of the Doctor, Face the Raven) and where the Bad Wolf and Daleks fused. (TV: The Parting of the Ways)
In one timeline, the Doctor died on Agrippina. (PROSE: Ghost in the Machine, A Girl Called Doubt)
The Siblings visit the Masque Magestrix. (PROSE: He's Behind You)
The Siblings used Henrik Chyll to learn about the Doctor. (PROSE: Visiting Hours)
The Siblings wear masks of bone. They cannot remember their origins, but the Doctor speculates that they are the last "fraction" of a group that chased paradoxes before the war. (PROSE: Alien Bodies, et al.) Late-stage splinter groups of the Faction, such as the Family of the Shadow Spire, were previously shown to include the rank of Sibling, whereas the hierarchy earlier iterations of the Faction moved directly from Little Sibling to Cousin. (PROSE: Going Once, Going Twice)
The Doctor ended the Time War. (TV: Dalek, et al.)