Ghost Hunter

From the back of the book: Since the day you solved the Harlowe Thrombey murder case, you've been a famous dective. But now you've decided to try a new career- ghost hunting. And you're going to start with the ghost of Harlowe Thrombey himself! You're in the dark, gloomy basement of the Thrombey mansion when a white glow suddenly appears at the top of the stairs. You hear eerie echoing peals of laughter. It's Harlowe Thrombey's ghost!