Michael Hulton wants justice. By that, he means “his inheritance, which consists of works of art that Flechtheim owned and either went missing or had to be sold during the Nazi era. They consist of 11 paintings and six works on paper, which are now owned by German museums, including works by Pablo Picasso, Max Beckmann and Paul Klee.” But when did Hulton’s great-uncle really sell the art? And will the museums ever agree?