Opus Dei: Fact vs Fiction [audio 24min]

If you're one of the 40 million people who have now read the novel The Da Vinci Code, you might be forgiven for thinking the Catholic group Opus Dei is a murderous secretive cult. And yet this group supposedly counts presidents and politicians among its 85,000 members. So what is fact and what is fiction? Sarah Montague talks to Opus Dei's UK spokesman, Jack Valero.