In Oh Pure and Radiant Heart, the three dead geniuses who invented the atomic bomb-Robert Oppenheimer, Leo Szilard, and Enrico Fermi-mysteriously appear in Sante Fe, New Mexico, in 2003, nearly sixty years after they watched history's first mushroom cloud rise over the New Mexico desert in 1945. One by one, they are discovered by a shy librarian, who takes them in and devotes herself to them.

Faced with the evidence of their nuclear legacy, the scientists embark on a global disarmament campaign that takes them from Hiroshima to Nevada to the United Nations. Along the way, they acquire a billionaire pothead benefactor and a growing convoy of RVs carrying groupies, drifters, activists, former Deadheads, New Age freeloaders, and religious fanatics.

In this heroically mischievous, sweeping tour de force, Lydia Millet brings us an apocalyptic fable that marries the personal to the political, confronts the longing for immortality with the desire for redemption, and evokes both the beauty and the tragedy of the nuclear sublime.