An Italian court is now explaining why they convicted Amanda Knox a second time for murdering her roommate. Documents released Tuesday say Knox actually delivered the blow that killed Meredith Kercher. The court also said because of Kercher’s wounds it was clear more than one person took part in the deadly crime. The panel said Knox and Kercher had a previous fight over rent money, house chores and having visitors over. Knox who stayed in the U.S. during the second trial was sentenced to 28 years in prison.