So if I understand correctly:
The police and a private investigator are sometimes the same person. If a family was getting nowhere with the police in their investigation of a missing loved one, they could pay for a private investigator, who is the same person. The PI could then use police files and information gleaned at public expense to carry out an investigation for profit. This is what "working with" private investigators means? So are families in effect being held for ransom if they do not pay for a private investigation of exactly the same case by exactly the same person, and all this is perfectly legal? In effect, not hiring the PI potentially means cases are left without resolution? Pay up or shut up? Wow, just wow! Double wow!
Also, there are not state-wide rules and regulations governing police standards and police conduct, but each city, town and hamlet does their own thing? Groovy, man!
You can see that I am having a hard time comprehending this. Also thinking a vacation to Montana, as so many people do where I live, is not a good idea. I wouldn't like to be disappeared, or to put my family through that ordeal.