"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.