The incredible event that rocked the DC Universe and led into 52 is available now for the first time in trade paperback! A critical moment in history has divided Earths three greatest super-heroes: Superman, Batman and Wonder Woman. As the worlds greatest super-villains unite, magical forces go awry, and humanity is threatened by mystery OMAC robots, long-lost heroes from the past have returned to make things right again at any cost.Its the DC Universes darkest day: Heroes will live, heroes will die, and the DCU will never be the same again. This comprehensive volume includes story annotations, character designs, script excerpts, previously unseen artwork and much more.