Strangers and Brothers Series by C.P. Snow

Brothers and Strangers, Volume 1 contains the first 4 books of C.P. Snow's incredible 11 book series. Volume 1 'Time of Hope', 'George Passant', "The Conscience of the Rich', and 'The Light and the Dark' (1071 pages)

It is the onset of World War II in the fifth in the Strangers and Brothers series. A group of Cambridge scientists are working on atomic fission. But there are consequences for the men who are affected by it. Hiroshima also causes mixed personal reactions.