Past Reckoning (short story)

Summary
The Doctor visits his old friend David Ghosthorpe a scientist who holds some of the greatest inventions in the universe.

But David's inventions are threatened when his evil sister starts to use them for her own pleasure

With Nyssa trapped inside her evil games, the Doctor must find a way to stop Ellen's new power from spiraling out of control 

Characters

 * Fifth Doctor
 * Nyssa
 * David Ghosthorpe
 * Ellen Carter

Continuity

 * The line "I'm a Time Lord. I walk in eternity" was first used in DW: Pyramids of Mars.

Timeline

 * Past Reckoning occurs after: BFA: The Land of the Dead
 * Past Reckoning occurs before: BFA: Winter for the Adept