Your question and your explanation are not talking about the same thing. Forensic crime experts are just highly focused socio-anthropologists with an expertise in evidence.
Someone who accuses someone of something is altogether different in their role. Yes we have too many wannabe prosecuting attorneys.
Accusing someone of a crime wrongfully is defamation, plain and simple. That act is a proper malfeasance to sue over to clear your name. The well done movie, Absence of Malice lays that out, although the twist is interesting.
This is a case of; "You much watch your news as entertainment". Do not get me wrong you can learn from it, just not the news.