I've been waiting for this book to hit paperback for years -- ever since I read a review when the hardback was published -- and it never made it there. I found a cheap copy of the hardback somewhere online, so I went ahead and bought it.
This is a fairly standard detective novel, except for the demons, ancient spirits, and monsters. I assume this is what's referred to as a "hard-boiled detective story", but I seldom read those so I can't say it definitely fits the mold. However, as I read I could list off what I assume are standard plot points: Hero is arrested for the crime he's investigating, cops get tough with Hero, Hero is beaten up/almost killed by villains, cop-friend comes through with critical bit of evidence.
The plot involved the grisly murders of several Los Angeles prostitutes. The Hero is a detective who was a teenage TV star. He investigates -- against his better judgment -- and finds himself in a sordid confluence of Hollywood, prostitutes, and Japanese mythology. The Hollywood setting isn't just window dressing; it's integral to the story.
The supernatural focus for this was on demons and spirituality from Japan. I found this aspect interesting and well-used. I know very little about this, so I can't vouch for the accuracy of what was written. I can't go into detail, since it'd be giving away some major plot points, but the writing was very good in some ways relating to the mythology. There's a fairly big expository lump about two-thirds through. It's nice to have all the info, but it was rather long.
I found the first quarter or so of the book fairly unpleasant. This section was when the Hero had most of his dealings with the police. The contempt and disdain the police have for prostitutes is made *very* clear by the language and words they use. I found the utter contempt for these women (probably seen as sub-human) to be more disturbing than the disemboweling and killings that were described. This attitude may be completely accurate for how police feel about prostitutes, but that doesn't excuse it. Accurate or not, I'm lowering the rating a star because I found this so unpleasant.
Overall, I think this was a pretty good book. I recommend it -- iff you don't think you'd be bothered by what hung me up on it.