Avon Books advertised this on a book reviewing platform without revealing any detail many months ago. A sucker for both devious marketing plots and psychological thrillers I leapt in and received an electronic copy of the book billed Can You Keep A Secret… and I wasn’t sure if that was a question of we reviewers or the title.

Of course as it wasn’t due to be published until November, by the time I got around to reading it, it now had a name (Cuckoo, though it’s also listed as A Stranger in Our Home in some places – the latter not exactly making sense to me, but whatevs…).