No, I'm pretty sure that nobody ever played either of the manhunter games 
There exists no third game, and I've heard of some plans remaking one (in LA, IIRC) but I think it was abandoned.
Vivendi holds all rights to the series, and as such, making the third game would be a breach of copyright, and is therefore vulnerable to legal action. Caveat emptor.
And if you're going to ask help for any game, please first specify what exactly your job is going to be. Just having an idea is not enough, everyone has ideas. You should also have some skills that are required on the team.

There exists no third game, and I've heard of some plans remaking one (in LA, IIRC) but I think it was abandoned.
Vivendi holds all rights to the series, and as such, making the third game would be a breach of copyright, and is therefore vulnerable to legal action. Caveat emptor.
And if you're going to ask help for any game, please first specify what exactly your job is going to be. Just having an idea is not enough, everyone has ideas. You should also have some skills that are required on the team.