"It's Halloween in Gotham City, but Batman isn't getting any treats. The Joker is unleashing a computer virus that could take control of all technology in the city, making it cackle and obey his every command! And he isn't working alone: The city's spookiest villains are working for the Joker and keeping Batman buys by going on a crime. Can Batman--and his pals Green Arrow, Cyborg, Nightwing, and Red Robin-- keep Gotham City from being tricked into becoming Jokertown?--Jacket flap.
