Just read two by Greg Iles. Turning Angel, and Devil"s Punchbowl. Both very good. I had never heard of this guy before, but he is pretty good.
Turning Angel- Story about a doctor in his 40"s ends up having an affair with a 17 yr. old, (his babysitter) she ends up dead.
Devil"s Punchbowl-Ex IRA goon running a riverboat casino, with a bunch of illegal action on the side, dogfighting, prostitution.
Both are based on a central character, Penn Cage, in a small southern town on the Missisippi, called Natchez.
(He's not the doctor, or the goon)