Amazing Mrs Pritchard

That's all there are. I wrote our PBS station (KERA-Dallas/FtWorth) about the "hanging" ending and they made inquiries at PBS, who stated that this was all that was made.

I think the reference to a "6th Episode" was due mainly to the perception that the premiere of the series was way too long, and that it seemed to blend two series into one (which is the impression that I seemed to get). If that is the case, the 6th episode was the finale.