This is an extremely academic book, but I guess it had to be. Most unfairly books of the bible are subject to questions of scrutiny and attacks on integrity, to a degree no other ancient historical writings are required to meet. Rather bizarrely it is particularly from so called biblical scholars coming up countless new ways to discredit biblical writing, that these attacks most usually come. Hemer has fought fire with fire, to surely put to bed any further arguments as to the historical basis for the book of Acts.
Hemer's methodology is to categorise and list the arguments and various possibilities; then to address them systematically. He does this from the background of a truly expert classicist (rather than revisionist theologian with ax to grind) with intimate knowledge of the Greco-Roman world - languages, archeology, inscriptions, legal and governmental processes, comparative literature; in fact the works. He proves without a shadow of doubt that there is nothing about the book of Acts to disbar it from being exactly what it purports to be - namely Luke's contemporary record of events at the founding of the Christian church, filled as it is with abundant evidences. Really this is simply Occams Razor at work, but such is the undermining/discrediting barrage that it was necessary to take the long route and instead of simply writing of the positives in Acts, rather to write counter to all supposed negatives.
Interestingly (other academics writing defences of the historicity of the bible have also died prior to publication!) this is posthumously published from manuscripts(1986). I wonder whether Hemer himself would have been able to revise prior to publication to widen the potential readership? As it sits the book is really formatted as an argument between academics with too much specialist knowledge assumed for even those with excellent general appreciation of the New Testament and its world. For example the various 'controversies' are not explained except by context, the Greek isn't even transliterated let alone translated, and there are vast numbers of abbreviations. Furthermore the 'categorisation and listing' method he used has led to a great deal of duplication of evidences, as they do, coming under multiple headings rather than being dealt with just the once.
Apart from fixing these issues, which would have added a few pages here and there filling in background and taken a few out with consolidations, it would have been nice to see a few maps and even some relevant plates. These changes would have greatly increased the potential audience... but presumably that would still be very small numbers. Notwithstanding these points this is by no means a large book, nor even with its 'discussive' style is it hard to read, once you deduct the perhaps accumulated 20% worth of reference footnotes which you can largely skip. Acts is safe - as Hemer asks and answers - we can can read it and say, 'this really happened!'