Something funny is afoot in Gotham City, but Batman and Batwoman aren't
laughing. Robbery victims are handing over their loot and seem downright
delighted to do so. While investigating this odd behavior, the Dark
Knight and his crime-fighting cousin uncover the use of Joker toxin. But
the Joker is locked up in Arkham Asylum or is he? Can Batman and
Batwoman get to the bottom of the jester's joke before the punchline
knocks out half of Gotham City? Find out in this action-packed chapter
book for DC Super Hero fans.