James Crumley has written a series of brilliant books with the best, in my opinion, being the Mexican Tree Duck. Things have deteriorated since then with The Right Madness being perhaps the worst of all his private eye books. Beautiful english and great descriptions but a disjointed and irrational plot. Far, far too many coincidences and a completely unbelievable central thesis. I had to read the book twice (and, sadly, make notes) in order to follow any kind of coherent story.
If you're a newcomer to Crumley and have started with this book, don't despair and go back to the early stories and start again.