Prayers for Rain by Dennis Lehane.
I enjoyed this book-I like detective stories when they are well written and don't make a lot of mistakes. I was reading the Patricia Cornwell series of books a while ago, and she made so many mistakes in her books that I finally had to stop due to extreme irritation.
Interesting plot, quite a few twists and turns, and edge of your seat excitement. If you like detective stories, I recommend giving this one a try.