Excelis Dawns (audio story)

Publisher's summary
That terrible old reprobate and transdimensional adventuress Iris Wildthyme has gone and locked herself up in a nunnery on the savage world of Artaris.

Here she is discovered by the Doctor and the reasonably brutal warlord Grayvorn. Together -- with a peculiar nun they pick up en route -- they must travel the forests and swamps of this ghastly world in Iris's double decker bus in order to tussle -- to the death -- with a horde of flesh-eating zombies for a mysterious and holy relic of unfathomable value and questionable pedigree.

But what is the Mother Superior's part in all this?

Plot
to be added

Cast

 * Fifth Doctor - Peter Davison
 * Iris Wildthyme - Katy Manning
 * Warlord Grayvorn - Anthony Stewart Head
 * Sister Jolene - Posy Miller
 * Mother Superior - Patricia Leventon
 * The Zombie King - Billy Miller

Individuals

 * The Doctor mentions Adric's death.
 * The Doctor, Nyssa, Tegan Jovanka and Adric spent Christmas with Iris on occasion.
 * Iris refers to Tegan as "the shrill Australian woman."

Continuity

 * The Doctor here gives an alternate explanation of the perspectives of his five incarnations, from DW: The Five Doctors.
 * Iris got her handbag on Hyspero, quite possibly when she visited the planet in EDA: The Scarlet Empress.

Timeline

 * Excelis Dawns occurs during part 4 of DW: Frontios after the Doctor has dropped off the Gravis.
 * This story occurs before DWM: Perfect Day