Mafia 87. At the Dawn of War

I don't know how Tox provides clues, but I know another Passepartout. Jean Passepartout. And in '89, a movie was actually made about him.

So, this is probably a clue, and we're on the right track. I just don't know how to connect it to anyone; I'm not good with clues.

Added 1 minute ago
Maybe the Mafia used a succubus and a murder? Although, wait, it would have been described.

Added 1 minute ago
And why are they all trying to kill the red-haired man and not succeeding?