Patty Frost was a security guard at Smith's Grove Sanitarium. She liked to tease her co-worker Larry Redgrave about his weight. On October 30, 2007, she and the other security guards were charged with transporting deranged patient Michael Myers. During the transfer, Michael broke off his chains and attacked Larry and fellow guards Zach Garrett and Stan Payne. She tried to get the door to open and watched as Michael killed Larry and Zach. As soon as she opened the door, she tried to shoot Michael, but he used Stan as a human shield. He then killed Patty by tearing out her throat and letting her bleeding body slump to the floor.