Joker and Harley Quinn have a daughter. Her name is Charlotte and she lives up to the psychotic Joker name. Gotham knows her as Mercy. On her first mission, she battles Nightwing. The boy begins to show interest her and she can't understand why. Is there a deep meaning behind his ambition or just trying to throw her in Arkham? (Mature Warning Chapters 9&12) UNEDITED.