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?

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

Continuity

 * The Doctor here gives an alternate explanation of the perspectives of the first 5 doctors from The Five Doctors.

Timeline
Excelis Dawns occures during part 4 of (DW: Frontios) after the Doctor has dropped off the Gravis.