Do you dare enter Arkham Asylum? The worst criminals in Gotham City are imprisoned behind the gloomy walls of Arkham Asylum. The Scarecrow, the master of fear; The Riddler, the prince of puzzles; Poison Ivy, beautiful and deadly queen of the plant kingdom -- all have been sent to Arkham by the Batman. Now they threaten to escape, and only the Dark Knight and Nightwing can stop them! Includes a guard tower, asylum van, cells for the criminals, a bed sheet 'rope' for escapes, Nightwing's cycle and much more! Includes Batman, Nightwing, The Riddler, The Scarecrow, Poison Ivy, and two Arkham Asylum guard minifigures.