A heartfelt story of a budding friendship in the thick of the war--winner of the Scott O'Dell Award for Historical Fiction It's 1943, and eleven-year-old Dewey Kerrigan is en route to New Mexico to live with her mathematician father. Soon she arrives at a town that, officially, doesn't exist. It is called Los Alamos, and it is abuzz with activity, as scientists and mathematicians from all over America and Europe work on the biggest secret...