OK, so by now the episode is due and a few of you are probably checking in here to see if there's any sign of it. I've been working on the text for ages and now the first draft is finally done. It's taken a long time to write because it's very difficult material and there's a lot of it. I don't think it's going to need a great deal of work because I edited as I went (sometimes I just hammer out pages in a stream-of-consciousness, other times I go slowly - this time I went slowly). The text is twice the page-count of a usual episode, so Episode 21 should be more-or-less about an hour in length. I'm going to do the final editing tomorrow and then begin recording.
If I'm lucky I'll get a first audio draft of the whole thing done. Then it's editing and re-takes for a couple of days, then I'll post. So it's looking like a weekend delivery. I can't say when for sure, it depends on the day job and all the other variables that strew our paths with obstructions and place spanners in our works.
I apologise for the delay. But like the song says, you can't hurry love. On the up side, I think the wait will be worth it: it's a killer episode. I thank you for your patience :-)