One or two (or 12) that I don't remember being mentioned here: Nevada Barr- the Anna Pigeon series, each set in a different state park, Anna is a park ranger who also keeps running into crime scenes; Lee Child; David Baldacci; C. J. Box (main character is a wildlife officer), Edna Buchanan (main character a newspaper reporter in Miami); J. A. Jance (has three different series running..the Evil series, J.P. Beaumont, and Joanna Brady); Greg Iles; Faye Kellerman; Sue Grafton's alphabet series; Robert Tanenbaum; Jefferson Bass (mostly about the UT Body Farm); Lisa Scottoline (lady lawyers); Steve Martini; John Lescroart; Sarah Paretsky; Jeffrey Deaver. I've been on a murder mystery kick for the last couple of years. Prior to that it was all non-fiction, mainly biographies. I guess I get a little OCD with reading subjects. Happy hunting, and aren't you sorry you asked?