In this graphic novel adaptation of Mary Downing Hahn's spookiest and most popular tale, two siblings must save their stepsister from the clutches of a vengeful ghost. When their mom remarries, Molly and her brother, Michael, try to make friends with their new stepsister, Heather...who only wants to make trouble for them. Then, Heather starts playing in the graveyard behind their new house. She claims she can talk to a ghost named Helen, and her behavior gets even stranger. Michael doesn't believe in ghosts and thinks their new little sister is just looking for more attention. But Molly isn't so certain, especially when Heather threatens that Helen is going to come for them and make them sorry. It seems as though things can’t get any worse—but they do. When Helen comes.