In the summer of 1993, Thomas Harding travelled to Germany with his grandmother to visit a small house by a lake on the outskirts of Berlin. It had been her soul place as a child, she said a holiday home for her and her family, but much more a sanctuary, a refuge. In the 1930s, she had been forced to leave the house, fleeing to England as the Nazis swept to power. The trip, she said, was a chance to see it one last time, to remember it as it was. But the house had changed. Nearly twenty years l ...