Nurse Sherri is part of a cult , starring Jill Jackson, who is a sexy porn star , who develops a possession , she is seen wielding a cleaver like some kind of butcher ninja , starts killing patients . She is possessed by a ‘preacher “. Now we all know in real life the preacher is a Bishop, McCorney is not sexy but a ‘conservative ‘ who won’t expose her porn shoulders, and she doesn’t kill patients (that we know of) but goes after nurses and does a total train wreck on their careers . In either case , she’s out of control. Like a demon possessed with a final goal , destroy , but save the brain washed like minded like her.