Peter Purves (Steven Taylor), Tony Millan (the Interrogator)
- Mother Russia was a 2007 audio-play from Big Finish Productions.
- Dodo Chaplet takes up a position as a piano teacher, on the condition that she does not have to play, or hear Steven Taylor sing, “The Ballad of the Last Chance Saloon”.
- Also, Steven is surprised that the Doctor wishes to holiday in Russia, since they have so recently holidayed in Tombstone, Arizona. Taken together, the two facts suggest
- that The events of Mother Russia occur relatively soon after those of The Gunfighters.
- Steven comments that Homer’s writings in The Iliad are “wrong”, and contrasts the French Army with that of the Greeks. (The Myth Makers)
- This audio drama was recorded on 6 June 2007.
- Though the word “isomorphic” never actually appears in the play, Steven’s description of why the TARDIS didn’t work for what he calls “the false Doctor” clearly indicates that The controls are supremely isomorphic — able to tell the difference between the real Doctor and an extremely good copy.