The new kid in school has a poltergeist problem, and only the Casebusters can help Everybody in Redoaks knows the old Everhart mansion is haunted. For years now, lights have flickered around the abandoned property at night, scaring away any local family who might be tempted to buy it. But when the Colliers move in from out of town, they don't know any better. For Brian and Sean's new friend Charles, bedtime is about to get spooky. Lucky for Charles, Sean and Brian are the Casebusters—expert detectives who have handled ghosts before. The phantoms inside Charles's house won't leave easily, though. And Brian and Sean are going to have to come up with something clever, quickly—or else Charles may never get a good night's sleep again.