How the front door of the Prisoners house in Buckingham Place opens automatically with that all so familiar electronic hum. It's one of the most enigmatic points in the Prisoner series, and has never been successfully resolved within the annuls of Prisoner appreciation. Unless it's all simply been a dream, the village and supposed reality of London being one and the same or the door simply upgraded. After all, it's not every citizen in the village who had an electrionically operated door you know! And yes, I know that this doesn't adequately resolve it either.