The series on the arts and popular culture.
The great German dadaist painter Kurt Schwitters lived in poverty. But now his legacy - an estimated 700 unsold works worth up to £30 million - is at the heart of an acrimonious wrangle in the art market.
This documentary investigates the story and attempts to unravel the web of intrigue that surrounds control of Schwitters's estate. Among those appearing in the programme are members of the painter's family and the art critic Andrew Graham-Dixon.