A Ghost in the Attic

Cathy told her sisters that she had seen a ghost in the mansion where they lived.  Everyone thought that she was making it up to scare her sisters, but she also informed them about a hidden stairs that the ghost had told her about. So her mother and father decided to call her bluff and see if she would telling the truth.  They were surprised when they found out that Cathy had seen a ghost and the spirit was still in the mansion.  This book does not have any explicit sex scenes or vulgarity.