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Andrew Marr discusses money, transformation and the obsession with growth with two leading economists: Diane Coyle and Dharshini David. Professor Coyle argues it's time to rethink the way we measure productivity, while the broadcaster Dharshini David follows the journey of a single dollar in her study of globalisation. The theatre director Anna Ledwich is more interested in the people whose lives revolve around the money markets: her latest play Dry Powder highlights their vulnerability, vision and sheer unadulterated greed. During the financial crisis of 2008, Iceland experienced proportionally the largest banking collapse by any country in economic history. The novelist Jón Kalman Stefánsson is writing a modern Icelandic family saga and explores whether the transformation of his country in the 20th century laid the foundations for its future collapse. Producer: Katy Hickman.

With millions of people on the move around the world, the novelist Mohsin Hamid has set his latest novel against the backdrop of the refugee crisis. He tells Kirsty Wark how he imagined those fleeing home passing through mysterious black doors into other parts of the world. The lawyer and sociologist Carol Bohmer examines the culture of suspicion which greets migrants when they arrive. She looks at how officials judge the line between truth and deception, and increasingly label people as liars, criminals or terrorists. While many countries are looking to fortify their borders, the former Portuguese Europe Minister Bruno Maçães believes we need to think on a super-continental scale. He travelled overland from the edges of Europe to the heart of Asia arguing for a new world order. But the theatre director Robert Hastie is more interested in what connects people to the land and their origins, as he revives Peter Gill's play The York Realist - a reflection on the rival forces of place, class and longing. Producer: Katy Hickman.

Art was power for Britain's kings and queens. In a new BBC TV series, Andrew Graham-Dixon visits the paintings amassed by King Charles I, the first great royal collector in British history. He tells Andrew Marr why after Charles was executed his royal artworks were flogged across Europe. The lost royal collection will finally be reunited this year in an exhibition at the Royal Academy of Arts. Historian Leanda de Lisle brings the Stuart monarch back to life in her biography White King. But was the art-loving king a traitor, a murderer or a martyr? And it is not only kings who use art to impress. Don Thompson meets hedge fund managers and foreign oligarchs in his study of the contemporary art scene, while artist Kelly Chorpening describes the role of Camberwell College of Art in shaping the art scene. Producer: Hannah SanderPicture credit: Anthony van Dyck (1599-1641), Charles I in Three Positions, 1635-36 Royal Collection Trust / (c) Her Majesty Queen Elizabeth II 2018, www.royalcollection.org.uk.