This is an impressively good slasher movie that embraces that sub-genre and runs with it, splattering blood all the way. A convicted serial killer, who is a servant of Satan, is put to death by electrocution but that doesn't stop him. He comes back to life in the hospital and starts killing people, including the sheriff (Robert Englund) who originally captured him. The killer wants to transplant his soul into a new body, which happens to be that of a troubled girl who is in the hospital because of a failed suicide attempt. For some reason, she is compatible with being possessed and has a connection with him.