The Third Evil (Fear Street, 3)

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?