This week I was supposed to write something inspired by a King of Spades card. I have written something for the King of Spades which, on any normal week, would be sufficient to post. But I’m doing something extra special for this one, so rather than posting what I’ve already done and spoiling the surprise, I’m going to wait until next Sunday to publish the King of Spades in its full glory. For now you just get this poorly-edited teaser picture featuring my top-secret collaborator, turned upside down so there’s no chance anyone will recognise her. For some of you, this post will make it pretty obvious what I’m up to; don’t tell the others, but I like you the best.