(W) Amanda Conner & Various (A) John Timms & Various (CA) Amanda Conner Harley's entire crew comes together to celebrate the birthday of cyborg senior citizen Sy Borgman...but is there actually a bigger secret behind this gathering? Plus, Harley becomes...the new Batwoman? And then, Harley crosses paths with some of Batman's greatest foes, including the Penguin, Killer Croc and Mr. Freeze! Collects Harley Quinn #28-42.