It is now the early 1950s. The former capital of Nazi Germany has emerged as the most volatile flashpoint of the Cold War. Within days of his [return], Bill Cochrane faces a Berlin that is a more treacherous place than ever. Old friends come in and out of the rain and fog above the Rivers Spree and Havel. But so do old enemies. And so do some old friends who may actually be new enemies. Treachery and violence hang in the air, as do menace and betrayal. Berlin is a city where no one is safe, and nothing is sacred. People disappear. Traitors are everywhere. Murders are common.