I’m indulging in a little bit of clickbait with this one, admittedly – you can’t see which book it is unless you click the link! Still, though, I imagine it’d be easy enough to guess for anyone who’s reasonably familiar with Ness’ works.
(With a degree of hindsight, having now seen Class, I think it could have done with being a little bit more like The Rest of Us Just Live Here, and actually maybe a bit more like Release as well.)
(Oh, that undoes my clickbait. Whoops.)