Don’t wait: the message could not be clearer. It started with my ‘slipped’ disc in October. Without this excruciating episode, I’d probably still be thinking about doing some regular exercise.

And then, a few weeks before Christmas, my laptop wouldn’t start. The repair place returned it to me “restored to factory settings” (words I shall never forget): no programs, no photographs, no documents. I wish I could say I had a backup of everything from the past two years, but that was on one of my famous ‘to do’ lists. Fortunately I’d dragged a lot of my Recoleta Cemetery photographs across to a portable hard drive, but I am minus some precious images and useful Word files. I’m thinking of it as the computer equivalent of my slipped disc – a painful push to better ways.

So, how can I link this in with the image in question? I found it yesterday while sifting through the lucky folders of Recoleta Cemetery photographs that made it on to the external hard drive and strangely I do see a connection. There’s the main angel centre stage and, poised in the background, a shadowy copy of herself, like an Understudy ready to step in at a moment’s notice. Just like a good computer backup, really.