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.

October 1945: The Germans and Japanese have surrendered. For Cletus Frade and his colleagues in the OSS, it should be time to pack up, but they have far more important things to do. Chief among them is the protection of their assets, especially the human ones. In the closing months of the war, the United States made a secret deal with the head of German intelligence’s Soviet section. In exchange for a treasure trove of intelligence - in particular the identity of the Soviet spies in the American atomic bomb program - his people would be spirited to safety in Argentina. Only a handful of people know about it. If word got out, all hell would break loose, and the United States would lose some of its most valuable sources and secrets. Meanwhile, in Argentina, a U-boat captain pops up out of the blue and surrenders his submarine and crew. And in the American Zone of Occupation in Germany, a young counter-intelligence agent pursues an unusual assignment perhaps a little bit too viorously. The consequences of both actions will affect not only Frade and company, but everthing they're working on. - "Goodreads"