"Nonstop action, real history, serious danger. You gotta read these books " --Alan Gratz, #1 New York Times bestselling author of Refugee December, 1961 Marta is a young girl who saw thirty miles of barbed wire appear across her city overnight, separating Berlin into West and East -- with Marta's home on the Communist Bloc-controlled eastern side. January, 1989 Now a spray-painted...