An extraordinary story of love and hope from the bestselling, Man Booker-shortlisted author of The Reluctant Fundamentalist.All over the world, doors are appearing. They lead to other cities, other countries, other lives. And in a city gripped by war, Nadia and Saeed are newly in love. Hardly more than strangers, desperate to survive, they open a door and step through. But the doors only go one way. Once you leave, there is no going back.