Ghostwheel
Pyrrhonist
I wanted to add my 2 cents (surprise-not). Back to the Van Dam case, a PI found her body and a sizeable LE team didn't. Just saying...I'm just curious -- what do you think a PI can do that a sizeable LE team can't?
Plus a PI has the luxury of concentrating on one case at a time. LE never has that luxury. A PI has to be able to get information without the uniform and badge, so they can bring in some resources that may not want to talk to LE.