I bought this mainly because I knew that Neil Gaiman of "Sandman" fame had cited Jonathan Carroll as an inspiration. This particular book makes it quite clear the degree to which Mr. Gaiman is indebted to Mr. Carroll.
Major plot points and themes from the "A Game of You" arc of "Sandman" were lifted from "Bones of the Moon". Both feature an adult's return to the dreamworld of their childhood, where they are guided by animal companions on a quest to save the land. And in both, some of these companions will die, and others will turn out to be...not quite what they seem. Oh, yeah, both protagonists have flamboyantly gay best friends, but that's pretty common these days in books, TV, and movies. It's a weird kind of marginalization, in which authors can feel they've shown solidarity with the homosexual community, while not actually elevating any gay or lesbian character to a lead role. But I digress.
In any case, the "real world" settings of this book are largely a European's idea of life in urban America. There are scenes in Italy, where all of the Europeans are cool and interesting and unique. But once in NY, the only characters to drift into play are ethnic street scum and a famous movie director, who talks as if he is not quite of this earth, or perhaps as if he's French and takes himself and his art far too seriously.
The entire book is--perhaps deliberately--permeated with a dream-like look and feel. People talk in odd ways, as if they've had days to think of their lines yet cannot understand their emotional essence. Characters accept improbable revelations all too readily, as if hungering for a connection with something magical. Yet the dreamworld of Rondua is presented in a rather pedestrian fashion, and seems to be a place that's a lot like our world, except with sillier names. This may be by design, as if Carroll is letting the reader fill in the dream reality by his or her self. He's largely content to simply mention things such as the Wooden Mice or the Perfumed Hammer and let the reader decide what these are.
Be that as it may, the book will likely be of interest to any hardcore "Sandman" fans to show how Gaiman has transformed the material for his own purposes.