Vincent""s conducted the murders in retaliation for (1) Zasa""s hitmen personally attacking him in his own home when he was sleeping with journalist Grace Hamilton (Bridget Fonda), and (2) conspiring to assassinate Michael during a massacre of mob bosses in an Atlantic City hotel meeting (by a helicopter/machine gun attack)."Maria prays by her bedside, blessing the Captain and he children:Dear Father,nowI know why you""ve sent me here.At the Friar""s Fat Boy drive-in, they ordered a Medieval Meal and other food items, and then continued their conversation.They said the genetics research that your father was doing with Norman Osborn was very valuable, and that people would pay a lot for it.McClane confronted Mai Linh in the control room, and engaged in an extended martial-arts fight and life-and-death struggle with her ("That""s enough of this kung-fu shit") - he eventually killed her when she was trapped in a vehicle that crashed in a fireball down an elevator shaft, after he had eliminated the remainder of her henchmen.