Book excerpt: The Joker returns to Gotham City! The Joker is through working with the Legion of Doom, and he wants to get back to his roots: giving Batman absolute hell! The Clown Prince of Crime comes back with a bang—and he’s not about to take prisoners! As if that weren’t enough, Lex Luthor delivers the cure for Mr. Freeze’s beloved wife, Nora, freeing her from cryo-stasis at last! But something else is very, very wrong with Nora…The Joker returns to Gotham City! The Joker is through working with the Legion of Doom, and he wants to get back to his roots: giving Batman absolute hell! The Clown Prince of Crime comes back with a bang—and he’s not about to take prisoners! As if that weren’t enough, Lex Luthor delivers the cure for Mr. Freeze’s beloved wife, Nora, freeing her from cryo-stasis at last! But something else is very, very wrong with Nora…