"Berlin. 1963. The height of the Cold War. An early morning spy swap, not at the familiar setting for such exchanges, or at Checkpoint Charlie, where international visitors cross into the East, but at a more discreet border crossing, usually reserved for East German VIPs. The Communists are trading two American students caught helping people to escape over the wall and a lower level CIA operative. On the other side of the trade: Martin Keller, a physicist...

"From the acclaimed, bestselling author of Stardust, The Good German, and Los Alamos--a gripping tale of an American undercover agent in 1945 Istanbul who descends into the murky cat-and-mouse world of compromise and betrayal that will come to define the entire post-war era. A neutral capital straddling Europe and Asia, Istanbul has spent the war as a magnet for refugees and spies. Even American businessman Leon Bauer has been drawn into this shadow...