Moonglow unfolds as the deathbed confession of a man the narrator refers to only as "my grandfather." It is a tale of madness, of war and adventure, of sex and marriage and desire, of existential doubt and model rocketry, of the shining aspirations and demonic underpinnings of American technological accomplishment at midcentury, and, above all, of the destructive impact--and the creative power--of keeping secrets and telling lies. It is a portrait of the difficult but passionate love between the narrator's grandfather and his grandmother, an enigmatic woman broken by her experience growing up in war-torn France. It is also a tour de force of speculative autobiography in which Chabon devises and reveals a secret history of his own imagination.