The Man Who Wasn't There (audio story)

 was the eleventh story of the sixth season of Big Finish Productions' Short Trips series.

Publisher's summary
Charley Pollard's innocent request to meet a historical hero seems the easiest thing for a friend with a time and space machine to make happen. But as Charley and the Doctor seek out the Victorian explorer, they uncover a sinister scheme to unravel Earth's future by affecting its past. But where in its history was the deed done? And is it already too late to put right?

Characters

 * Eighth Doctor
 * Charlotte Pollard
 * Time Lord messenger

Continuity
to be added