Written and drawn by the masterminds behind the critically acclaimed "Batman: The Animated Series," Paul Dini and Bruce Timm, this Batman one-shot reveals the origins of Harley Quinn as she proves her love to the Joker by trying to eliminate the Dark Knight on her own!

Now in trade paperback, this fantastic collection features the origin of Harley Quinn, co-starring The Joker and Poison Ivy. Also included are tales starring The Scarecrow, Ra's al Ghul, Mr. Freeze and Batgirl from BATMAN ADVENTURES ANNUAL #1-2, BATMAN ADVENTURES HOLIDAY SPECIAL, ADVENTURES IN THE DC UNIVERSE #3 and BATMAN BLACK AND WHITE #1.