Joseph Duveen’s approach to art dealing was famously simple: “Europe has a great deal of art, and America has a great deal of money.” Beginning in the late 1800s, Duveen bought thousands of artworks from declining European aristocrats and sold them to wealthy industrialists in the United States. Today, many of these pieces form the bedrock of American museum collections, while his methods – by turns ingenious, theatrical, and frankly unscrupulous – still echo through the art market a century on.