Batman: Harley and Ivy DC Comics Hardcover July 1, 2007 by Paul Dini (Author), Judd Winick (Author), Bruce Timm (Author), Joe Chiodo (Author), Shane Glines (Author).
Villains Harley Quinn and Poison Ivy plan to take down Batman once and for all, but first Harley has to convince Poison Ivy that she has what it takes.
