Book excerpt: Berlin in the 1920s is a city of seedy night clubs and sumptuous art galleries, where nothing is quite what it seems. It is home to Emmeline, a young art student; Julius, an art expert who loves paintings more than people; and Frank, a Jewish lawyer looking for a way to protect both his family and his principles as the Nazis begin their rise to power. Rachmann, a mercurial art dealer-- and newly discovered paintings by Vincent van Gogh-- will provide a scandal that turns all their lives upside down. -- adapted from jacket