Sweet Tooth

How easily we are fooled, and how easily we fool ourselves. That's the sense we get when reading this latest from Booker Prize winner McEwan (Solar), set in the Cold War 1970s. Rather gorgeous Serena Frome ("rhymes with plume") attends Cambridge to study mathematics, though she'd rather be reading, because she's persuaded that women must prove themselves adept with numbers. She scrapes by with a third, meanwhile having an affair with a married history professor who secretly grooms her for the intelligence service and then dumps her. Drafted by MI5, she's on the lowest rung when she's asked to participate in a mission, codenamed Sweet Tooth, aimed at secretly funding writers whose views align with the government. Serena's target is Tom Haley, with whom she foolishly falls in love. Then he writes the grimmest, darkest postapocalyptic novel imaginable.