Wait Till Helen Comes is by Mary Downing Hahn. Molly (12) and her brother Michael (10) have never liked their young stepsister Heather. She keeps trying to break up their parents' marriage. When their parents move them to the country into an old house that used to be a church something changes. Heather begins hanging out in the old cemetery and talking to someone named Helen. Molly feels certain that Helen is a ghost and that they are all in danger, especially Heather. A really creepy ghost story.
Ratings: 6th grade - 7 out of 10.