Witness a never-before-revealed meeting between Bart and the Dark Knight, an adventure in which they join forces to stop the Joker. But can Impulse conquer his next enemy without Batman's help?
Mark Waid, Karl Kesel, Jay Faerber, Chuck Dixon, Tom Peyer, Todd DeZago, Peter David, Cully Hamner, Joe Phillips, Ethan Van Sciver, Amanda Conner, Marty Egeland & Angel Unzueta
