Charlotte is a British expatriate who has recently settled in the nations capital with her second husband. Meanwhile, Charlie Leigh-Hunt has been posted to Washington as a replacement for Guy Burgess, last seen disappearing around the corner and into the Soviet Union. Charlie is soon shocked to cross paths with Charlotte, an old flame of his. Two decades or so later, in 1969, Joe Wilderness is stuck on the wrong side of the Iron Curtain, held captive by the KGB, but his old friends Frank and Eddie are going to try to spring him out of the toughest prison in the world. All roads lead back to Berlin, and to the famous Bridge of Spies.