Sam Byers’s worryingly zeitgeisty second novel, Perfidious Albion, imagined a post-Brexit dystopia dominated by global tech companies, corrupt spin doctors, shady think tanks and the corporate manipulation of government. So far so true — were it not for the current pandemic, one might call him a soothsayer. His third, aptly titled novel, Come Join Our Disease, dispenses with the crystal ball and instead explores the fear that the internet, despite its boons, is making us all ill.