The Wings of a Butterfly (audio story)

The Wings of a Butterfly was a 2010 audio short story written and performed by Colin Baker for Big Finish. It featured a companion-less Sixth Doctor. Written about the year 2000, and previously published in the unlicensed anthology, Missing Pieces, the story explored the Doctor's willingness to change the flow of time in ways not authorised by the High Council of the Time Lords.

Summary
Visiting Gallifrey to attend an academic conference, the Sixth Doctor's old friend and mentor, Duotheros, requests that he use the TARDIS to examine a temporal anomaly centred on Bixor. The planet, once thriving, appears to have mysteriously eradicated itself, substantially reducing the number of people interested in buying Duotheros' definitive history of that sector of space. Will the Doctor's investigations reveal the cause? Or does Bixor's untimely demise have something to do with a certain blue box?

Characters

 * Sixth Doctor
 * Duotheros

Continuity

 * The Sixth Doctor's attitude towards changing history is the polar opposite of that expressed by the First Doctor in TV: The Aztecs.