If you are old enough to remember the popular eighties “soap opera” Dallas, then you will no doubt be au fait with the infamous ninth season of the show. Having painted themselves into a corner with the death of a popular character, the writing team effectively revealed in the season finale that everything that had transpired in the previous thirty episodes had been “all a dream”. Let us take a moment to reflect upon the hubris of this “creative” decision. Did fans complain and roll their eyes at this utterly trite plot device? Yes, they most certainly did. But they also kept watching and the ratings increased. It got the writers out of a fix of their own making and allowed them to move on as if nothing had happened. It was a very high profile example of so-called retroactive continuity being used in a mainstream TV franchise and my first experience of such a narrative device.