The Joker escapes from Arkham Asylum and tricks Batman into following him into an old warehouse. But the building has been remodeled into the Joker's fun house. Batman must outwit clown robots and escape deadly amusement rides to make sure that the Joker does not have the last laugh! Just in time for Batman's 80th Anniversary, this action-packed chapter book also features a brand new Batman's Friends and Foes Roster and historical archives from the Caped Crusader's many years of fighting crime.