The Christmas Inversion (short story)

 was the third short story in Twelve Doctors of Christmas, featuring the Third Doctor.

Summary
to be added

Characters

 * Third Doctor
 * Jo Grant
 * Captain Mike Yates
 * Tenth Doctor
 * Jackie Tyler
 * Harriet Jones

Continuity

 * Jackie mentions the Slitheen, the pig crashing into Big Ben, and Harriet Jones helping save the world. (TV: Aliens of London, World War Three)
 * The Doctor mentions the "Omega business". (TV: The Three Doctors)
 * Jackie believes that the Doctor has regenerated again, and, when meeting Jo and Yates, she thinks that Rose and Mickey have also changed their appearance. (TV: The Christmas Invasion)
 * UNIT's secret HQ is no longer located inside a building marked with a sign which reads "UNIT Headquarters," (TV: The Five Doctors) and is instead in a base under the Tower of London. (TV: The Power of Three)
 * Jackie recalls that Rose went back to "certain death" to save the Ninth Doctor. (TV: The Parting of the Ways)
 * Jackie recalls Rose telling her that she had met her father before his death. (TV: Father's Day, The Parting of the Ways)
 * When Mike Yates mentions UNIT's name as "United Nations Intelligence Taskforce", the Tower guard notes that its now "Unified Intelligence [Taskforce]." This same discrepancy was noted in a conversation between Jack Harkness and John Benton. (COMIC: Official Secrets)