This book could be retitled, ‘The bluffer’s guide to early church history.’ Despite the slightly sensationalist title, this book doesn’t have a witch-hunting or hysterical tone, and points out that ‘most of those dubbed heretics were usually asking legitimate and important questions’. It goes through each of the main systems of thought in the early church that challenged orthodoxy, and particularly the doctrine of the Trinity – Judaisers, Gnostics, Marcion, Docetists, Mani, Sabellius, Arius, Apollinarius, Pelagius, Eutyches, Nestorius, Socinus – summarises their argument, tells a little of the story surrounding their movement, the orthodox response to the respective heresy, and some implications for today. The genius of this book lies in its conciseness – it manages to communicate some very complex and confusing philosophies in memorable phrases and relatively few words, and is a great book for anyone wanting to quickly get a handle on the core issues of doctrine in early church history. Highly recommended.