My friend hilasterion is working through Alister McGrath's book. Iustitia Dei: A History of the Christian Doctrine of Justification. I have interest in this book, not because I feel it's the definitive historical work on this subject, but rather because of the way Roman Catholics cite this book. It amazes me how frequently McGrath is either misquoted, or misunderstood by Rome's apologists. I think I first heard about this book listening to an old debate between Gerry Matatics and James White. Gerry referred to it as proof Protestant scholars see faith alone as theological novum.
hilasterion started a CARM discussion thread:
I'm posting this link here so I can check in on it. He's got some people to contend with: a Lutheran that doesn't like Calvinism, one or two somewhat knowledgeable people, a confused Catholic who stated, "I have never read the book, but Im pretty sure there were post/threads in the past where people said that in that book McGrath said something to the effect that Faith Alone was an invention by Luther and had never been taught by previous Christians."
Yes, it's true, there is now a third edition of this book. Amazon has copies around $80, and used copies start around $68. I found a reasonably priced copy here, which I did purchase. On my sidebar, I link to Abebooks. I purchase many of my books via this site. It's not always the case, but often I can find a book for much less than the Amazon price via Abebooks.