In the summer of 1961, a wall of barbed wire goes up quickly in the dead of night, officially dividing Berlin. Aware of the many whose families have been divided, Luisa joins a secret spy network, risking her life to help East Germans escape across the Berlin Wall and into the West. Bob Inama, a soldier in the US Army, is stationed in West Germany. He's glad to be fluent in German, especially after meeting Luisa Boigt at a church social. As they spend time together, they form a close connection. But when Bob receives classified orders to leave for undercover work immediately, he doesn't get the chance to say goodbye. With a fake identity, Bob's special assignment is to be a spy embedded in East Germany, identifying possible targets for the US military. But Soviet and East German spies, the secret police, and Stasi informants are everywhere, and the danger of being caught and sent to a brutal East German prison lurks on every corner. Best-selling author Heather B. Moore masterfully alternates the stories of Bob and Luisa, capturing the human drama unique to Cold War Germany as well as the courage and the resilience of the human spirit.