Keywords when describing the dean who expelled Ment: cognac, refrigerator, cookbook. You can also consider his decision to stand up for the female students; maybe it will lead to something (a bodybuilder, a knight, or something like that). If anyone can, please check the profiles; I can't right now because I'm using a mobile device with a limited data plan. I'll go through them all myself in the evening.
Another thing to note: the killer is definitely not the one who was blocked (I don't know how to read the nickname correctly). Blocking your own mafia member for an alibi is a desperate move; it's much more beneficial to use a block to eliminate a peaceful roleplayer or a maniac. By the way, it's possible that the maniac missed the murder precisely because he was blocked, although he might have simply chosen not to waste a bullet in a non-critical situation.
Considering that Ment is a strong player, as they say, he could have been killed by inexperienced mafia members who were trying to protect themselves from any potential complications.
But I'm not sure - I'm seeing everyone for the first time.