Harley Quinn is one of the most dangerous criminals in the world. She's also head over heels in love with the Clown Prince of Crime -- the Joker! And to prove her love for her "Puddin," she's going to need to do something awfully special. Something along the lines of... KILLING BATMAN! From the award-winning producers of the accalimed "Batman: The Animated Series" comes the most twisted love story ever told.