Lost in Stinkeye Swamp

 Lost in Stinkeye Swamp was the twenty-fourth book in the Give Yourself Goosebumps gamebook series. It was preceded by Zapped in Space and followed by [http://goosebumps.wikia.com/wiki/Shop_Till_You_Drop...Dead! Shop Till You Drop...Dead!]

Plot
You move to a new house called Swamp House. It's ugly, run-down, and haunted by a ghost named Annabelle, but there's treasure hidden on the grounds. In the basement, you find a magic telescope and Annabelle's two-hundred-year-old diary. Whether you take the telescope or look in the diary determines what happens in the story.