As with all Gillian Flynn stories, it’s extremely difficult to discuss the plot of this without giving away spoilers.
Suffice to say that, in this story, nobody and nothing is what they seem.
It purports to be a ghost story, but even that is uncertain.
It purports to be a book, but it’s a short story that’s been bulked out with pages of praise for and previews of Flynn’s earlier full-length novels.
It’s sharply done, whip smart and fun, but the publishers have something approaching a cheek to charge four quid for an hours reading.
Still, fun if pricey.