"BMW" and "Varta" are symbols representing the strength of the German economy in the world. But hardly anyone knows that the threads of these firms converge in the hands of one single family: Germany's largest industrial dynasty. Drawing on entrepreneurial talent and political acumen, its four generations built a true empire, and their success is a clear example of the combination of family tradition, economics and power in Germany. At the same time, they managed to remain invisible. Rüdiger Jungbluth publishes for the first time the fascinating history of the Quandt family.