An episode dedicated to the relationship between science and art. Andrew Graham-Dixon investigates the science behind fakes, misattributed art and previously lost masterpieces. Michael Smith visits the Wellcome Collection's bizarre new show Skin. Mark Kermode talks to mathematician and movie buff Marcus Du Sautoy about the portrayal of science in film. Will Self walks the East Riding coast riffing on its erosion, and Tom Dyckhoff visits the world's first materials library that will inspire the buildings of the future. Clemency Burton-Hill talks to artist Conrad Shawcross, and Ben Lewis conducts a poll to measure attitudes on the future of art.