Billy and his sister, Sheena, unwittingly dive into a terrifying mystery when they accept a surprise invitation to HorrorLand, the amusement park

Visiting their uncle's seaside home for the summer, a brother and sister open a mysterious trunk in a back room and discover a sinister-looking p

Billy and Sheena go with their Uncle, Dr. Deep, to search for treasure and are pursued by pirates who have been dead for two hundred years, and w