According to her own complex moral calculations, Katie Carr has earned her affair. She's a 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 - properly, maddeningly, give-away-all-his-money good - Katie's sums no longer add up, and she is forced to ask herself some very hard questions.

Nick Hornby is the author of six bestselling novels (High Fidelity, About a Boy, How To Be Good, A Long Way Down, Juliet, Naked and Funny Girl), as well as a novel for young adults, Slam, and four works of acclaimed non-fiction: Fever Pitch, 31 Songs, The Complete Polysyllabic Spree and Stuff I've Been Reading. He has written the screenplays for the films Fever Pitch, Wild, Brooklyn and An Education, which was nominated for an Oscar. He lives in Highbury, north London.