"Vengeance Is Thine" conclusion! The Justice League battles through the dreaded Pit of Tartarus, mythological prison to the most wretched creatures imaginable.��Batman, Superman, the Flash, Green Lantern, Aquaman, and Wonder Woman must resolve their long-held grudges while they still can-and before the world burns. Yet even if they succeed, they must still defeat the monster that lives and rules at the dark base of Tartarus.