Interstitial (audio story)

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

Publisher's summary
When the TARDIS is drawn off-course by temporal disruption, the Doctor and his companions discover a research facility conducting dangerous experiments. But how do you fight the future when time itself is being used as a weapon?

Part one
to be added

Part two
to be added

Cast
to be added
 * The Doctor - Peter Davison
 * Nyssa - Sarah Sutton
 * Tegan Jovanka - Janet Fielding
 * Marc - George Watkins
 * Jennings - Jeremy Ang Jones
 * Kalu - Anna-Maria Nabirye

History

 * In this century, paper is immensely expensive, and its use can lead to a prison sentence.

Science and technology

 * Marc is amazed to see a sliding door, as well as the stars from outer space. He also wonders what energy is.
 * Professor Kalu and Jennings develop a chronon bomb on Proxima for Earth Central. Kalu harnesses interstitial time in its development, and creates the chronon seed.
 * The Doctor refers to chronon waves and waveforms, which carry chronon energy.
 * The Doctor explains to Marc that interstitial time theoretically exists between the beats of Planck time.

TARDIS

 * The state of temporal grace within the TARDIS stabilises Chris temporally.

Continuity
to be added