If you're a crime or mystery writer, you may want to check out Marianne Wheelaghan's blog, where she gives a great overview of a talk by forensic anthropologist Sue Black. Attending talks by people in the police/forensics field is an excellent way to do background research for a novel. I went to a similar kind of talk a few months ago -- a Crime Scene Investigator from the Durham Police Department discussed taking photographs at crime scenes. I learned a lot about how the police secure a crime scene, document all angles of the area, and manage to take photographes in the pitch black to capture as much information as possible. After the talk, I realized I hadn't thought through the murder scene of my novel thoroughly -- it was a real wake-up call!
I don't know how up to date it is, but WritersWrite offers some good links for authors needing to research the police and other justice/crime info. And if any local groups in your area feature guest speakers from the police department, it's definitely worth checking out.