A distant in-law who is very shady, where would I go to find out more info about their shady business dealings (Tax fraud, insurance fraud, stolen cars, stuff like that, the police here won't really look into - i.e. most of these things have to be reported through the tax department but it's a very slow, inefficient process)? I don't want to go into detail because it's a long story, but do I go to a PI? Is there anyone else that one could go to because I don't really feel like dealing with PIs because they cost money and also aren't very trustworthy... are they other options or is this the only one?