Every now and then I do a Twitter search for references to Mrs Darcy. Mostly the results have nothing to do with aliens – in fact quite a few of them are from pupils complaining about a teacher of theirs who happens to have that name – but very occasionally something relevant does pop up. Like this. As one of my Facebook chums remarked, it is rather charming that she has, quite literally, judged my book by its cover. On balance, though, I’m going to chalk it up as a win.