False Negative (audio story)

 was the fourth and final story in the audio anthology, Encounters, produced by Big Finish Productions. It was written by John Dorney and featured Jemma Redgrave as Kate Stewart and Ingrid Oliver as Petronella Osgood.

Publisher's summary
When a strange travel capsule is activated in UNIT's laboratory, Osgood and Josh find themselves in a whole new world of trouble. Soon, nobody at UNIT HQ is quite who they seem, and the team discovers that the greatest danger they could ever face comes from within...

Plot
to be added

Cast

 * Kate Stewart / Parallel Kate - Jemma Redgrave
 * Osgood / Parallel Osgood - Ingrid Oliver
 * Captain Josh Carter / Parallel Josh - James Joyce
 * Colonel Shindi / Parallel Shindi - Ramon Tikaram

Continuity

 * The capsule was left behind by the Auctioneers in Vienna. (AUDIO: The Sontaran Project)
 * Kate is reminded of "an old family story" about the Inferno Earth, asking if her alternative universe counterpart has an eyepatch. (TV: Inferno)