The MI5 1/2 adventures start here, in London, in the wee hours, in thickish fog, back in the days when mobile phones were becoming common enough, but a phone with a video display was still something that could draw more attention than a spy might want to have from the general public - not that either the leading man or the leading lady of this story much wanted a videophone, both of them being technophobes, not to mention not being fond of being monitored...