A couple years ago, "The Da Vinci Code" created quite a stir. Dan Brown’s imaginative book took an obscure theory and turned it into front-page news. All of a sudden, everybody was talking about the Templars and the hidden bloodline of Jesus. And of course, Christians have found the whole discussion deeply troubling, because if Dan Brown is right, then the foundations that hold up 2,000 years of Christian history have essentially been ripped out from under our feet. So today's question is simple: Is there any truth to it?