All thirteen Doctors have received a mysterious summons to Christmas dinner. Can they actually make it through a holiday meal together without a) throwing the food, b) bickering, or c) blatantly telling each other vital information about their own future?

Everything has a price tag. If Missy had offered to tell the Doctor where Gallifrey was if he took her army, he may have chosen differently. AU where the Doctor and Missy travel together with the army of Cybermen, conquering the universe.

borgh Hargh tlhIngan 'ejDo' je 'entepray'. (A Klingon language fanfic)

The TARDIS materializes on the USS Enterprise. The Doctor and Captain Picard discuss the Borg and the Daleks, being assimilated and destroying Gallifrey, and maybe one of them finds a little peace. Set after Star Trek: Family and before Doctor Who: Day of the Doctor.

How exactly did the Doctor know that the Pandorica forces you to go on living? Here's how. A scene from the Doctor's perspective between The Pandorica Opens and The Big Bang.

When the Doctor went looking for Gallifrey at 10-0-11-00:02, there was nothing there. Missy lied to him. What if, just after he'd given up all hope of finding it, Missy turned up in his TARDIS and brought him home?