R.L. Stine 
Second Evil [EPUB ebook] 

Corky Corcoran is sure its just her imagination when she sees her dead sister rise from the grave. Or is it? Corky is trying to put the nightmare of Bobbis death behind hershes back on the Shadyside cheerleading squad and has become friends with Kimmy and Debra. But everything is not back to normal for Corkyshe hears horrible screams in the gym, her friend has become obsessed with the occult, and a strange young man is following her. And then the murders begin again… Has the evil spirit from the Fear Street cemetery returned to destroy them one by one?