Plot
Contiene: Harley Quinn: Birth of the Mirth collects THE BATMAN ADVENTURES #12, THE BATMAN ADVENTURES: MAD LOVE #1, BATMAN: HARLEY QUINN #1, BATMAN #570, #573-574, BATMAN: SHADOW OF THE BAT #93, DETECTIVE COMICS #737, #740-741, BATMAN: LEGENDS OF THE DARK KNIGHT #126, AZRAEL: AGENT OF THE BAT #60, ACTION COMICS #765, CATWOMAN #82-84, #89, HARLEY QUINN #1-8, and a back-up story from BATMAN: GOTHAM KNIGHTS #14.