Batman [Bruce Wayne]; Riddler [Edward Nigma]; Kara Harris; Nathaniel Koughun; Martin Buttery; Professor Jarrod Buttery (flashback); Riddler's father (flashback)
Synopsis
Batman prevents the train from exploding, saves Kara Harris from the Riddler's trap, and learns the secret behind Dr. Dalloway's kidnapping, but the Riddler's master plan is still proceeding.