Backtrack (audio story)

 was the second story of The Tenth Doctor Chronicles. {{Infobox_Story|

Publisher's summary
When the TARDIS crashes in the vortex, Martha and the Doctor find themselves on board the time-ship The Outcome, where the host offers temporal cruises at reasonable prices.

But time travellers must never cut corners. Dangerous forces have been unleashed, and Martha finds her medical skills put to the test as she deals with some lethal fall-out.

Time is running out, and the clock is ticking towards disaster!

Plot
to be added

Cast
to be added

Story notes
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Continuity
to be added