Dead Ground — Gerald Seymour

Celebrated for his "palm-sweating tension" (The New York Times) and "rare insight" (The Plain Dealer), Gerald Seymour defines spy fiction at its best. Now, in this chilling revenge mission and haunting love story, he floodlights the East German Stasi as a young female British army corporal seeks retribution for Cold War atrocities.
One frozen night, Tracy Barnes witnesses the killing of her lover by the East German secret police. Years later, when the Wall has crumbled and old enemies have become new friends, Tracy encounters the murderer and plans to make him pay. But in a country still at war with itself, Tracy finds that she is being played as a pawn in a far bigger game reaching all the way to Moscow.