Promises was an interesting departure because [I thought], "OK, for once I'm not going to write the season opener, I'll let David clean up his own mess, and then Justin will come in for a two-parter, and then we'll go off on another adventure and it won't be until episode five that I'll come back."

Then we discover that by episode five, we still haven't resolved very much of the back-story, that had been left hanging in the cliff-hanger, so I had a lot more to do than I had originally envisioned. This time, to some extent, I took the Kemper approach, which is, ignore most of it and leave it until later, hoping that somewhere down the line we'll explain it. And hopefully, somewhere down the line we will.

It was fun to bring the couple back together again, but, of course, in the twisted Farscape way of including Scorpius into the mix, and the fun and games that that involved. Going in, we knew there were certain things we wanted to do. Scorpius is going to come on the boat and be around for a while, [and] having Scorpius and Harvey around is probably going to be a little much.

It makes sense to lose Harvey, for the moment at least, to try and keep things a little bit simpler so that someone watching the show for the first time isn't absolutely completely confused, they're just 80 to 90 per cent confused.

So those were the rough parameters I had, and after that it was up to me what to do as far as where [Aeryn] had been and what she'd been up to and so forth. We do get some explanation of it, but not that much. In true Farscape fashion.