The full story of the various warring nations’ race to be the first to develop the atomic bomb.

The structure of matter --Splitting the atom -- The Frisch-Peierls memorandum -- Heavy water -- Tube alloys -- The US Office of Scientific Research -- Werner Heisenberg -- The Manhattan Project -- Soviet spies -- Grouse, Freshman and Gunnerside -- The Soviet atomic bomb project -- The Japanese atomic bomb -- The Alsos missions -- 'Little Boy' and 'Fat Man' -- 'Joe-1'.