I was recently thinking about one of my favourite novels, Piranesi by Susanna Clarke, and it reminded me that there’s a quality some science fiction, dystopian and speculative fiction stories have—a rare one—that I absolutely love. It’s hard to describe, and perhaps even harder to achieve, but I’d characterise it as a tantalising sense of wrongness intertwined with mystery, often (though not always) occurring at the beginning of a story, which usually precedes a giant, reality-altering twist.

It’s that growing conviction that things don’t make sense in the world, that something very odd is happening, perhaps even something sinister, but you don’t know what it is yet. You just have this sense that the situation is off, wrong somehow, and that you, and perhaps even the characters, have a fundamental misunderstanding of the reality in which they find themselves. At the same time, you can feel in your bones that you are going to find out what it is, and that when you do, it’s going to be a hair-prickling revelation or a fantastically unexpected twist. This feeling seems to often be evoked when the initial story world, or simply the story we think we are about to be told, is increasingly questioned, then ultimately flipped on its head.