This is without a doubt a "must listen" part 2 has the best cliffhanger I've heard out of any of these early stories. The fact they made all of part 3 a musical - something which is not reflected anywhere else in the story is truly ballsy. The chemistry between Evelyn and The 6th Doctor continues to impress and is totally unlike any other companion/ Doctor dynamic. Evelyn as the unreliable narrator is particularly amusing.

Having said all this its got a very thin plot and is deliberately cliched in many ways, so while I say its a "must listen" I wouldn't go as far as to say its one of my favourites. Its a classic though.