Originally published in DETECTIVE COMICS #871-881, this epic from the writer of JUSTICE LEAGUE and BATMAN forces the Dark Knight to confront one of Gotham City's oldest evils! Plu, the corpse of a killer whale shows up on the floor of one of Gotham City's foremost banks, setting a deadly mystery in motion!Originally published in DETECTIVE COMICS #871-881, this epic from the writer of JUSTICE LEAGUE and BATMAN forces the Dark Knight to confront one of Gotham City's oldest evils! Plu, the corpse of a killer whale shows up on the floor of one of Gotham City's foremost banks, setting a deadly mystery in motion!