Harold Saxon (Simm!Master) moves into 10 downing street, ready to begin the next stage of his dastardly plan, but finds the building already occupied. Based on a post by tumblr user @clanoffelidae, also contains song references (:
"Plot holes are just the pockets where people keep their fanfiction ideas" Yasmin Khan, the Doctor, the Master, and several TARDIS's. Angst, some comfort, and my explanation for the Trenzalore paradox.
What happened in those ten years he was with the Dursleys ? Now we will finally know...