First, this is a good story, well told. Second, it is an important story, not only for teen age boys and girls, but for adults, who would thoroughly enjoy it. Erich Braun had been born in the United States but was brought up in Germany, and when he returned to America, at fourteen, he was a full-fledged Nazi, with five years of training for the ""noble task"" of acting as a spy for the Fuehrer. He saw America as a weak, stupid, deluded country. He saw nothing but glitter behind the windows of Fifth Avenue. He ""know"" Germans were the master race. He took up his work in Yorkville New York's German center, among neighbors whose Americanism made no impression. Then came the capture of the German saboteurs who landed on Long Island, and his uncle, member of the mighty Bund, was forced to flee from America, and he -- for a few terrifying moments, found the roles reversed in his class at school, and he was the timorous minority, he began to realize with tremendous relief that after all he was an America citizen, and free to choose. America took on new meaning. A ticklish subject to handle -- the delicate balance needed to keep it from being melodrama is admirably achieved. A timely book, with something vital to say.