Directed by: Jon Burton
Starring: Clancy Brown, Troy Baker, Charlie Schlatter, Christopher Corey Smith, Travis Willingham
Continuity mistake: As Lex and Joker are talking on the bridge between two towers of Arkham Asylum, Joker is shown standing in the middle of the bridge. But when the guy on the intercom announces there is an escape going on, the camera changes angles and suddenly Joker is right next to the edge. (00:19:20)
Poison Ivy: What's going on?
Harley Quinn: It's a riddle.
Riddler: Oh come on! That's my thing.
Trivia: When The Joker interrupts the ceremony and shows the video of him blowing up the building, there's a scene where he hits the detonator a few times before the building blows up. This is a scene paying homage to what happened in The Dark Knight when there was an actual unplanned delay during filming of the explosion going off during the blowing up of the hospital.