Mary Jane Kelly
The other four victims were different: they had been killed outside. Their mutilations could have been done within minutes. Kelly was murdered inside, in the room that she rented at 13 Miller's Court. This gave her muderer a lot more time to mutilate her. Her murderer disemboweled her as well. Kelly's body was the most mutilated one of all the confirmed victims. Her murderer needed about two hours to perform these mutilations.