Conversion (BFM audio story)

 was the two-part story comprising part of the two hundred and fifty eighth release in Big Finish's monthly range. It was written by Guy Adams and featured Peter Davison as the Fifth Doctor, Sarah Sutton as Nyssa, Janet Fielding as Tegan and George Watkins as Marc.

Publisher's summary
On the fringes of the galaxy, techno-pirates and research medics fight for the secrets of advanced extra-terrestrial technology. For the Doctor, however, a more personal battle awaits as he confronts his own guilt and the creatures that killed a friend: the Cybermen.

Part one
to be added

Part two
to be added

Cast

 * The Doctor - Peter Davison
 * Nyssa - Sarah Sutton
 * Tegan Jovanka - Janet Fielding
 * Marc - George Watkins
 * Cyber Leader - David Banks
 * Cyber Lieutenant - Mark Hardy

Continuity
to be added