In the fall of 1959, for a time capsule, students draw pictures of life as they imagine it will be in 50 years. Lucinda, an odd child who hears voices, swiftly writes a long string of numbers. In 2009, the capsule is opened; student Caleb Koestler gets Lucinda's "drawing" and his father John, an astrophysicist and grieving widower, takes a look. He discovers dates of disasters over the past 50 years with the number who died. Three dates remain, all coming soon. He investigates, learns of...