"You know Mrs. Gibbins?" "Yeah," John David said, looking straight into my eyes. "She's my teacher." "Your teacher?" I asked. Now I was really confused. "Sure," he said, "and this book is the last thing I remember." John David closed the book, turned it around so I could read the cover, and pushed it across the desk toward me. My blood ran cold when I read the inscription: THE COVEN OF WESTLAKE ELEMENTARY. "For some reason," John David said, "I don't...