According to her own complex moral calculations, Katie has earned her affair.
She's doctor, after all, and doctors are decent people, and on top of that,
her husband David is the self-styled Angriest Man in Holloway. But when
David suddenly becomes good, Katie's sums no longer add up, and she is
forced to ask herself some very hard questions... Nick Hornby's brilliant
new novel offers a painfully funny account of modern marriage.