Since the day of her mother's death, 15 year-old Jem has kept a secret. When her eyes meet someone else's, she sees a number - the date on which they will die. Life is hard, until she meets a boy called Spider. Suddenly her world seems brighter, but is it really? Queuing for the London Eye, Jem foresees a chain of events that will shatter their lives for ever. Today, everybody's number is up.