This is an outstanding and eminently readable work on a very challenging subject. It gives an extremely broad overview of the development of Christian theology from the scholasticism of the high middle ages to the post-modern theologies of the early 21st century. I would recommend this book more than any other I know for someone seeking an introduction to why theology is the way it is today and how we got here. The book contains several chapters on theologies often overlooked by studies of this sort, such as those of Roman Catholicism, Protestant confessionalism, fundamentalism, and Pentecostalism. Though it's not without flaws--the last is one of my areas of specialization and I noted several mistakes--this book deserves 7 out of 5 stars for covering these theologies at all and doing so very clearly and efficiently. Again, I highly recommend this book without reservation for anyone seeking an introduction to this era of historical theology. One choice of the author, unfortunately, limits its usefulness for more advanced students--it entirely lacks footnotes or any other form of citation. All it included at the end of chapter is a list of "Sources and Further Reading," which is mostly secondary and tertiary sources. Though important primary works are discussed in the chapters themselves, no aid is given to those seeking to follow up on specific points of the theologies being discussed. For that, one will have to look elsewhere. That said, this remains an excellent book.