Well, it's time to revive this thread, because I've found a new adventure game (new to me anyway, it came out in 2003). It's called Conspiracies, and it's an FMV (Full Motion Video) game originally made in Greece. This is the setting in which the murder/mystery takes place:
"The 21st century human society is threatened by a destroyed natural environment, cannot solve the problems of over-population, suffers from poverty, organized crime and the increasing forms of depression and neuro-diseases.
Earth is one single federation of cities. Greece is one of them. Every city-state has its governor and its local government, which is subject to the Supreme Federal Government. But the political lobbies, the big companies, the organized crime impose their own order, a situation, which most of the times surpasses law, creating its own reality."
Far fetched, I know! But seriously, the game starts out as a private dick down on his luck, and ends up in a tangle of... well... conspiracies. One thing I think is interesting is the introduction of a revolutionary drug that eliminates stress and contains a "happy" component. Prozac, anyone?