Un-like the highly romantic American films "Fat Man and Little Boy" and "Enola Gay" or the Truncated "Day One" or the well-made "Hiroshima" this is a detailed re-telling of the Manhattan Project with a lot of fascinating side bars. I saw this one first and it really got me going on the subject! All of the above mentioned are recommended for those interested in the subject, but this one is head and shoulders above the rest.