It's all AU.

It was meant to be over. It was meant to be a break. It was meant to be a nice, quiet Christmas with Tom and her family, but oh, no, of course, saving the world again didn't mean that Martha's parents didn't have another flaming row over Christmas dinner or that Leo didn't skip out which meant another row, or that...well, at least Tom was one of the family if they weren't on their best behaviour in front of him.

Piling dishes high, Martha pushed the kitchen door open with her hip, and walked into...the hotel lobby.

"Oh, bloody hell, not again!"