Having read a book on Jack the Ripper by a less competent investigator, of which I have provided a less than complimentary review (see my other Amazon reviews), I was given this book as being the best account of the Ripper facts.
This book is indeed a comprehensive account of the surviving documentary evidence on the Whitechapel murders, starting out with an open, balanced and factual view rather than with a conclusion to be proven.
Sugden chronicles each of the murders in detail, talking a little also of the relevant social factors within the community, as well as the contemporary politics working within and around the investigation. He concludes by providing an interesting analysis of the case against each of the favourite Ripper candidates.
My only criticism of his approach, is that for Ripper amateurs such as myself, who are less familiar with the incidents, it is easy to become lost amongst the facts of different murders. There is little overview of the case and sometimes it becomes difficult to see how the facts are associated to one another, in order to build a case within one's own mind.
Nevertheless, this is an excellent compilation of the facts of the Ripper case. Sugden is balanced and does not resort to grandiose claims of having solved the mystery, instead meticulously tackling the facts on their own merit. Although its strength is in the comprehensive detail, those new to the subject might be wary that this in itself might be a disadvantage to them.