Hannah's one-time love, Clay Jensen, appears in the trailer in a dark suit, which he puts on as he prepares to go to court (a court summons can be seen on his bedspread in one shot). As for the threat given to him? "You talk, you pay." Clay is more involved with Hannah's tapes than anyone besides Tony, so it makes total sense that whoever is trying to shut this case down would go after him with a vengeance. And as a reminder, his situation is even more complicated due to the fact his very own mother is the lawyer representing the school.