Nightwing #72

Dick Grayson has learned the truth: that 'fixing' his identity lies with none other than Barbara Gordon. He must go to Gotham to find Batgirl-and runs into The Joker's new henchperson, Punchline. Unlike Harley Quinn, Punchline's deadpan black humor matches the deadly knives she uses on her victims and for her next joke, Ric Grayson is the punchline.