"It's Halloween night in Gotham City, but Batman isn't getting any treats. A crime spree has Batman on the trail of the city's spookiest villains: Scarecrow, Clayface, Silver Banshee, and Solomon Grundy. They are all working for the Joker, who wants to unleash a computer virus and digital laughter that will give him control over all of Gotham City's technology! Joining forces with the Green Arrow, Cyborg, Nightwing, and Red Robin, can Batman save...