Batman 570 (DC, 1999)

Written by Bronwyn Carlton; art by Mike Deodato and David Roach; cover by Rodolfo Damaggio .

Harley Quinn hits the streets of "No Man's Land" in Part 1 of the 2-part "The Code!" Following the events of BATMAN: HARLEY QUINN, Harley returns just as the Joker expands his turf over the broken bodies of two warring gangs. While she uses a philosophy called "The Code" to try to manipulate events to her liking, Joker makes a sweeping move that threatens to tip the balance of power in Gotham and change the face of "No Man's Land" forever. 40 Pages, Full Color.