Long ago, the planet Pavonis IV was saved from certain destruction by the Doctor. Now it is dead, laid waste by environmental catastrophe, but a few survivors and their precious race bank survive on the starship Myriad. Their mission: to scour the universe for the fabled dimensionally transcendental obelisk in which their saviour travels, and persuade him to save their world again.
As the TARDIS arrives, by chance, on the Myriad, the Fourth Doctor and Romana are just in time to see the crew achieve their goal. Or so they think... Death stalks the corridors of the ship, the artificial intelligence CAIN has lost control, and a force is about to be unleashed that threatens the entire galaxy.
to be added
- The Pyralis were imprisoned in an area of space near Kasterborous.
- The people of Pavonis IV remember the Doctor being an old man with white hair and three companions.
- Along with The Beautiful People, this is one of only two appearances of K9 Mark II in The Companion Chronicles.
- It was originally called The Cholarian Effect.
- This audio drama was recorded on 4 June 2009.
- This story takes place before The Horns of Nimon as Romana says, "Who needs a sonic screwdriver?" and would later make her own in Horns. This contradicts the Big Finish website stating this is set between Horns and The Leisure Hive.
- This story was released on CD and download.
- This story was told from Romana's perspective.
- The Myriad has a race bank. (TV: The Hand of Fear, Underworld)
- The TARDIS's arrival onboard the Myriad was chosen by the randomiser. (TV: The Armageddon Factor)
- Romana isn't sure she wants to return home yet, but would later be called back to Gallifrey (TV: Meglos) before accidentally entering E-Space. (TV: Full Circle)