Ian McEwan is the bestselling author of seventeen books, including the novels Nutshell; The Children Act; Sweet Tooth; Solar, winner of the Bollinger Everyman Wodehouse Prize; On Chesil Beach; Saturday; Atonement, winner of the National Book Critics Circle Award and the W. H. Smith Literary Award; The Comfort of Strangers and Black Dogs, both short-listed for the Booker Prize; Amsterdam, winner of the Booker Prize; and The Child in Time, winner of the Whitbread Award; as well as the story collections First Love, Last Rites, winner of the Somerset Maugham Award, and In Between the Sheets.

On a windy spring day in the Chilterns, the calm, organized life of science writer Joe Rose is shattered when he witnesses a tragic accident: a hot-air balloon with a boy trapped in its basket is being tossed by the wind, and in the attempt to save the child, a man is killed. A stranger named Jed Parry joins Rose in helping to bring the balloon to safety. But unknown to Rose, something passes between Parry and himself on that day--something that gives birth to an obsession in Parry so powerful that it will test the limits of Rose's beloved rationalism, threaten the love of his wife, Clarissa, and drive him to the brink of murder and madness. Brilliant and compassionate, this is a novel of love, faith, and suspense, and of how life can change in an instant.