For nearly 40 years, Wolfgang Beltracchi fooled the international art world and was responsible for the biggest art forgery scandal of the postwar era. An expert in art history, theory and painting techniques, he tracked down the gaps in the oeuvres of great artists – Max Ernst, Fernand Léger, Heinrich Campendonk, André Derain and Max Pechstein, above all – and filled them with his own works. He and his wife Helene would then introduce them...