Berlin Walls — Bill Rapp

August, 1961: CIA officer Karl Baier is back in Berlin just as the Wall is going up and the world appears to be on the brink of a new war. Baier must help a KGB defector escape East Berlin and find his brother's killers in return for information on Moscow's plans, but with a Soviet assassin and the East Germans on their trail-all while his wife's parents are trying to flee East Germany.