This year, Cassidy and Jeff's classroom is in the basement. But they're not scared. There's no such thing as ghosts, right? Tell that to the ghosts. The basement belongs to another class--a ghost class. They don't want to share. And they will haunt Cassidy and Jeff until they get their room back! "The basement of Sleepy Hollow's elementary school is haunted. At least that's what everyone says. But no one has ever gone downstairs to prove it. Until...

Mr. Morton's third graders are all set to turn the school basement into a haunted house for their family and friends. The problem is ... the basement is already haunted!

It's Career Day and Andrew, the class bully, wants to be a rich and famous ghost hunter. Will the Ghostville ghosts be toast? Or will Andrew get himself slimed?

Field Day is going to be a nightmare for Cassidy because she can't run or kick or bat as well as her friends. But there is one thing she is really good at-- finding out ghostly secrets.

"The secret is out! Well, all of the third-graders' secrets are out. A tattletale is loose in the basement of Sleepy Hollow Elementary and suddenly rumors are spreading about everyone. Now the class is playing the blame game. Is Cassidy the blabbermouth? Is Jeff the Big Mouth? Or is someone--or something--else spying on the basement class? Nina is ready to do whatever it takes to catch the snitch. But would she be willing to tell on her best friends?"--Cover,...