If you're starting with the Kenzie-Gennaro books, don't forget to read them in order. In a run-of-the-mill detective series that usually won't matter. But these characters really evolve over the years, so I strongly recommend reading them in chronological order:

1) "A Drink Before the War."
2) "Darkness, Take My Hand."
3) "Sacred."
4) "Gone, Baby, Gone.
5) "Prayers for Rain."
6) "Moonlight Mile."

And when you get to "Moonlight Mile," keep in mind that Lehane took more than a ten year break from these characters to concentrate on "Mystic River" and "Shutter Island."

Lehane is fantastic. Now that Elmore Leonard is gone, in my opinion it's a toss-up between Lehane and Michael Connelly as to who is the greatest living crime writer (I don't consider Richard Price a crime writer, he honestly writes literary fiction and he does it on a grand scale).

Happy reading, Cheech!