Harley Quinn: The Animated Series: Legion of Bats! (Harley Quinn: The Animated Serie: Legion of Bats! #4)

As Ivy becomes increasingly engrossed in her new job, and increasingly tempted by an old flame who has re-entered her life, Harley finds herself assisting Batgirl on an important mission that goes horribly awry. Meanwhile, Clayface and King Shark have been pursuing Harley, confused about their old friend's new allegiances.