After Dan Brown's publishing phenomenon The Da Vinci Code was cleared of plagiarism charges, this documentary explores the climate which has permitted a fictional story to make such an effective challenge to conventional history that it has forced a counter-attack from the Church, the art world and academics. Has Brown cracked the most difficult code of all our 21st-century cultural DNA? Contributors include Richard Leigh, author of The Holy Blood and the Holy Grail, art critic Brian Sewell, novelist Sarah Dunant, columnist David Aaronovitch and Opus Dei director Jack Valero.

A young couple, Peter and Ruby, are married with three children. On a weekend trip a tight-knit group of friends confront them about their constant bickering and propose they divorce.