Agreed. It’ll turn out one of the girls dissed him or refused his advances or called him “gay” or something and he flipped out. Didn’t he give a couple of the girls a ride home after a night out drinking? He’s a Penn. native; that’s why he was caught there. He was doing grad study in criminology just over the border in Washington.
It also might turn out he did not know these people at all and possibly picked them at random.