Oh, shit. Why do I always forget that one?! It's fabulous!

ETA. I decided to re-listen to this one since you reminded me and now I remember why I don't go back to it very often. The Trakkenites are SO repugnant. I find this audio hard to listen to because I just want the Doctor to beat the living shit out of all of them. I find that level of arrogance and superstition hard to take. It's a shame because the storyline really is quite excellent.