Examines the phenomenon of haunted houses and their ghosts, citing specific examples, and discusses the various theories that seek to explain them, including how they may be faked.
Charlie and her new friend Mona ride their horses out to a sand bar, but when a sudden sea fog comes up they try to make their way back to the island, fearing the ghost stories they've been told might be true.
While on lookout duty, the students of Pirate School spy a ghost ship following them, and when they bravely board it they receive a warning that may save their lives, if only they can convince Rotten Tooth or the captain that danger lies ahead.