I haven't yet read God is Not Great: The Case Against Religion, by Christopher Hitchens, but judging from Richard Dawkins' gushing review any serious reader looking for a telling argument against the truth of Christianity will find the book disappointing.
If Dawkins' analysis is any measure, the closest Hitchens comes to scoring a blow against Christian belief is when he trots out the same old higher critical hypotheses about the New Testament's supposed lack of authenticity. It's a pretty shallow harbor in which to anchor an argument that Christianity is false, but Dawkins gives us no reason to think he has access to a deeper one. A readable antidote to this old chestnut is Mark Roberts' Are the Gospels Reliable?
Hitchens also tries to discredit Christian belief on the basis of the alleged "evil" of the Gospel message. What exactly is that evil, you ask? It turns out to be the vicarious atonement of Jesus Christ. Really. After finding all manner of horror in the sacred writings of the Muslims and Jews, the best that Hitchens can do to show the moral equivalence of Christianity to Islam is to hold up the idea that God became man to demonstrate the depth of His love for us by sacrificing Himself in our place. In Hitchens' mind that's a terrible evil.
Those not familiar with this aspect of Christian theology are invited to read this little allegory and decide for themselves where exactly the evil lies in the idea of substitutionary atonement.
Anyway, like I said, I haven't read Hitchens book, and perhaps if I had I would be more impressed. If any readers have read it and think that it makes a stronger case against Christianity than what I've suggested here please let me know.
RLC