There aren’t many authors as generous to their readers as David Mitchell. Ever since Ghostwritten in 1999, he’s specialised in big novels bursting with storytelling in all kinds of genres — most famously Cloud Atlas, where six very different novellas were immaculately intertwined. Not only that but, as he’s said, ‘each of my books is one chapter in a sort of sprawling macro-novel’, with many of the same characters and events being either updated or given fuller backstories.