' But there's nothing wrong with the Nazi regime,'' argued Ann. It was true that somehow the atmosphere was changing around them in Germany that summer of 1938. Foreigners seemed less welcome, and an inordinate amount of what material was on the move, scarcely camou-flaged now. Still, people seemed clean and tidy and prosperous. ''You should know what's wrong after typing all my articles.'' Uncle Dick had replied. ''Don't imagine Hitler a benefactor to the German people...''