‘The Power of Nightmares’ is a terrifying and moving book about the power of a sleepover

“In a way, I think it’s more of a novel,” she says.

“The book has a very specific way of telling the story.

It’s the kind of thing where you can say, ‘Well, you can’t really understand what happened.’

But it does provide a sort of a sense of the world, which is a nice little bit of the weirdness.”