I doubt Max is part of a Mafia group.
If Max is a Serial Killer, we already know his killing flavor. If any of his kills are something the town does not direct, we lynch him. If he kills even there is a promise of him not killing, we lynch him.
Basically: we already have Max reined in
Let the scum kill him off at night if they want to. Max is a wasted lynch either way. Think before you speak.