You walk down the halls of Arkham Asylum, clipboard in hand and a dead serious look on your face. You had just been assigned to deal with the Joker, aka Jack Napier, who had no idea you were his kid, neither did anyone else. You enter the room and see the psychopath strapped to a metal chair, humming a tune with his normal grin. His eyes fall onto you and his grin widens.

"So you're the doc who's looking after me, huh?" He giggles.