The Third Evil — R.L. Stine

IT'S BACK!
Did the evil spirit really leave Kimmy's body? The cheerleaders of Shadyside High can still feel its dark presence, and Corky knows that it is out there, somewhere close. And getting closer.

Corky is tormented night after night by dreams of her dead sister, Bobbi. What terrifying message is Bobbi trying to tell her? When the evil begins again -- more horrible, more gruesome than ever -- Corky knows it is up to her to learn the century-old secrets and destroy the evil spirit's power for good. But so many have died already -- will Corky be next?