In the aftermath of the surrenders of Germany and Japan in October 1945, Cletus Frade and his colleagues in the OSS are given the life-threatening task of maintaining security during a covert U.S. deal with Germany for intelligence about the identities of Soviet spies in the American atomic bomb program.

"Their average age was twenty-five. They came from Berkeley, Cambridge, Paris, London, Chicago--and arrived in New Mexico ready for adventure, or at least resigned to it. But hope quickly turned to hardship as they were forced to adapt to a rugged military town where everything was a secret, including what their husbands were doing at the lab. They lived in barely finished houses with P.O. box addresses in a town wreathed with barbed wire, all for...

"Nathan Silverman grew up in Berlin in the 1920s, the son of a homemaker and a theoretical physicist. His idyllic childhood was soon marred by increasing levels of bigotry against his family and the rest of the Jewish community, and after his uncle is arrested on Kristallnacht, he leaves Germany for New York City with only his mother's wedding ring to sell for survival. While attending an evening course at Columbia in 1942, Nathan notices a recruitment...