In 1988, scientists ran a series of tests on the shroud of Turin, the Christian relic said to be the cloth in which the body of Christ was swathed after his death. The results dated the material's origins to the early 14th century, proving it to be a fake. In this documentary, historian Emily Craig examines claims that Leonardo Da Vinci was commissioned by members of a powerful Italian dynasty to produce the artefact, and used a primitive form of camera to create the image.