How should art depict the relationship between man and God? How can art best express eternal values? Can you, and should you, portray the face of Christ? For over a thousand years these were some of the questions which taxed the minds of the greatest artists of the early West. In this three-part series, art historian Andrew Graham-Dixon sets out to unravel the mysteries of the art of the pre-perspective era. Why has this world been so frequently misunderstood and underrated? His journey takes him from the mysterious catacombs of ancient Rome to Coptic Egypt, to the Orthodox Christian world of Istanbul and then onwards to medieval Italy and France. This programme was first broadcast on BBC Four in 2007, and later repeated on BBC Two.