I expected this book to be set up like a travel guide, with the typical TripAdvisor or Fodor's style organization into restaurants, accommodations, things to see, and so on. Turns out this book is a great deal more, and is much more entertaining and interesting than that old gimmick would have been.
The authors start with a sort of travel guide structure, but then take us on a global and cultural and time travelling tour of a multitude of stories, speculations, reports and conjectures regarding Hell, Lucifer and sin. There are some very sharp throwaway lines, some nice set pieces and lists, and some fascinating stories and descriptions drawn from the literature. Some bits here and there drag a bit and not everything hits the mark, but that is really not surprising given the nature of the project.
The authors have a nice, rather than smarmy or condescending, touch and aren't driving home a specific agenda so much as having fun with the way Hell has been addressed over the centuries. Think of very erudite scholars with a flair for storytelling who have prepared a light entertainment about Hell and you will more or less get the flavor of this book. A very nice and entertaining find.
Please note that I found this book while browsing Amazon Kindle freebies. I have no connection at all to either the author or the publisher of this book.