"The Joker is stirring up trouble again in Gotham City, but this time he has an ace up his sleeve: a computer virus that can wipe out all of the city's technology in an instant! Can Batman thwart the Joker's plans for world domination? It's the ultimate showdown between Batman and the Clown Prince-or shall we say king?-of Crime!" --Publisher.
Joker (Fictitious character) -- Juvenile fiction.
Superheroes -- Juvenile fiction.
Supervillains -- Juvenile fiction.
Spaziante, Patrick, illustrator.