This book sets out to show that essential doctrines of Dispensational Theology are to be found in the early Church fathers. The author is to be commended for his attempt to engage with early writers and their doctrine. I can't say much else positive here though as the book suffers several serious flaws.
First, the author engages in a kind of self-contradictory approach to historical theology; on the one hand he understands that the non-historical nature of Dispensationalism is problematic and seeks to establish historical grounds for it (hence the book), but on the other hand he condemns seeking to support theology from history. In this regard, his opening comments seem to undermine his own book.
Further, no definition of Dispensationalism is offered that sets it apart from other systems. Morris states that the distinguishing characteristic that enables us to "recognize Dispensational doctrine when we see it" is "the doctrine that from time to time, God changes the way He relates to mankind." Depending on what exactly is meant by this, this might possibly be an adequate definition. However, this definition fails to agree with the defining characteristics given by most prominent Dispensational theologians (such as Charles Ryrie, Michael Vlach, Darrell Bock, Craig Blaising, Renald Showers, etc). Also, Morris' statement can be applied quite well to other orthodox theological positions, such as the Covenant Theology of the Reformation. Morris does mention some specific doctrines that he equates with Dispensational thought, such as a "literal interpretation," the Church/Israel distinction, the Daniel gap theory, and a pre-tribulational rapture. These specific doctrines are more helpful in discerning Dispenational ideas, but they fail to entirely salvage Morris' confusion over what is distinctly Dispensational and what is not. This leads to significant problems with the rest of the book.
Throughout this book, Morris examines various quotations and attempts to show how said quotations espouse something that is uniquely Dispensational (though he acknowledges Dispensationalism as a system can only be properly spoken of in recent years). These attempts all fail, largely due to the above mentioned confusion over what is and is not distinctly Dispensational doctrine. Possibly the worst example of this is the entirety of chapter 1 where Morris claims the use of the word "dispensation" is grounds for seeing proto-Dispensationalism. This of course is not true as the word and at least some of its meanings are accepted among even Covenant Theologians. The word is in fact embedded in both the Presbyterian Westminster Confession as well as the Baptist 2nd London Confession. The examination of a literal interpretation also suffers in this regard as the literal interpretation, far from being rejected by Reformed and Covenantal positions, is embraced by them. Most of the other specific examinations are similarly flawed.
Finally, Morris' understandings of many of the quotations he uses are suspect or even out-right incorrect. For instance, Morris' selection from Tertullian attempting to show Tertullian embraced a literal hermeneutic explicitly states that Tertullian regarded the allegorical method as valid. Similarly, when reading more than the specific quotes used by Morris to show Tertullian taught a pre-tribulational rapture of the Church, we see that Morris' understanding of Tertullian makes Tertullian speak of chronological absurdities. Morris argues that Tertullian distinguished between "the Church" and the "righteous" when he wrote of the end times. If this is true, then Tertullian wrote that the Antichrist's wrath directed at the non-Church righteous came into being prior to the existence of those the wrath is directed against. Similarly, the two quotations given for Victorinus might be read together as espousing a pre-tribulational rapture, but they can just as, if not more, easily be read as discussing entirely different events and therefore speaking nothing of the timing of the rapture. There are several other instances of misunderstandings or special pleadings by Morris.
Due to these numerous flaws, this book fails to establish what it intends. Morris has not shown anything unique to Dispensational doctrine in the Church Fathers.