"Don't worry," the Doctor said cheerfully as they marched down the street. "What we have here is a perfectly normal case of non-linear recursive temporality. The first page of the notes that we've been given by Sally Sparrow say that we go to 1969 to investigate the Weeping Angels. So all we have to do is go to her shop and history will just happen as it should. And when we get to page two . . ."
"Well?" Martha said.
The Doctor turned the page. ". . . at which point they steal your TARDIS," he read, and came to a stop. "What? WHAT? WHAT?"
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