They say that doing even the most demanding and stressful of jobs can become routine after prolonged exposure, and Felicity had been doing her current job so long that she was all but dead to the world whilst carrying it out night after night, coasting through on a cocktail of drugs and almost mindless indifference.

But on occasion, there was a slight difference in the experience that inspired her to change her attitude, to apply herself a little more and thus change the complexion of the encounter utterly.

Because, as they always say: "You can lead a mermaid to water, but you can't make her shake her tail..."