As I mentioned earlier, it is surprising how little reference is made to Jesus' teaching or unique mission.
While Jesus' death is mentioned on a couple of occasions The Da Vinci Code never actually deals with the most significant thing Christians believe about Him.
Christians from the first disciples until the present day believe that Jesus was fully God and fully man and that in His death he has opened the way for us to be in right relationship with God.
His resurrection from the dead was the vindication of God of Jesus' claims to be God and is the proof that those who place their trust in Him will, like Him, be raised to eternal life.
The only secret which would devastate the Christian Church is the discovery of Jesus' body. If the resurrecdtion did not take place, our faith is useless (1 Cor. 15:12-14).
Christian belief does not revolve around Mary Magdalene, the Priory of Sion or Leonardo DaVinci but around the person of Jesus.
Perhaps it isn't that surprising that The Da Vinci Code doesn't mention Jesus' resurrection.
If Jesus is just another political leader of the past we are able to ignore him in the present. Like Julius Caesar, Napoleon or Queen Victoria we can perhaps learn from Him or be inspired by his achievements but he is safely in the past.
If, however, he has been raised to life it is a very different matter.
At the end of the day, we need to challenge our friends and family members to consider the claims of Jesus.
Conspiracy theories such as those propounded in The Da Vinci Code are mere smokescreens to the real issue - Jesus Christ.