In September 2002, archaeologists stumbled across what's been described as the biggest biblical find since the Dead Sea scrolls. A limestone coffin with the words 'James, son of Joseph, brother of Jesus' was found in Jerusalem. But what's the meaning of this extraordinary discovery? An elaborate fake or the oldest archaeological link to Jesus? Biblical archaeologist Jerome Murphy O'connor picks through the evidence in a journey that takes him from the Wailing Wall to the archaeological bowels of the Sorbonne and asks whether we really are one step closer to proving that Jesus of Nazareth existed.