gets overrun by zombies, Batman and Batgirl team up with Mystery Inc. to get to the bottom of the oddball apocalypse. Turns out, the ghastly ghouls are part of a fiendish plan to reveal the Dark Knight's true identity. Can Batgirl, Scooby, and the rest of the gang keep the Caped Crusader's greatest secret from falling into the hands of a criminal mastermind? Find out in this action-packed chapter book for fans of Batman and Scooby-Doo!