In this sequel to "The Penny Pendleton Mysteries: The Case of the Missing Holy Grail", ace detective Penny Pendleton, and her trusty bodyguard, Moose McGillycutty, delve into another puzzling case. This time the nine-year-old sleuth tackles a creepy old house in town that has a sinister reputation, after a fellow student is accused of lying about it being haunted!! Is this house actually filled with spooks and things that go bump in the night, or something else? Join Penny, Moose, and her courageous team of friends as they explore thrills, spills, and a shocking secret revealed!