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David Hockney became gripped by a desire to find out how the artists of the past had managed to depict the world around them so accurately and vividly. For two years, he sacrificed his own time as an artist to follow this mystery trail, obsessively tracking down the hidden secrets of the Old Masters. In the movie, produced by BBC, David Hockney demonstrates how, four hundred years before the invention of the photograph, artists were using simple cameras to capture realistic images. Hockney takes us to Florence, Bruges, Ghent, and a specially designed set in Hollywood, to demonstrates his findings. Now, for the first time, Hockney recounts the story of his quest as it unfolded. He explains how he uncovered piece after piece of scientific and visual evidence, each one yielding further revelations about the past. With the benefit of his painter's eye, he examines the major works of art history and reveals the truth of how artists such as Caravaggio, Velazquez, van Eyck, Holbein, Leonardo and
