The world’s most classic heroes reunite to stop the world’s newest champions. Posing as a new group of super-heroes, the Hyperclan have descended upon Earth, convincing everyone that they are a benevolent force. But as their true nature and plans come to light, only the World’s Greatest Heroes can stop them. Standing side by side, Batman, Superman, Wonder Woman, Aquaman, the Flash, Green Lantern and the Martian Manhunter take on the alien posers and come to realize that Earth needs a force made up of only the mightiest of heroes. Collects JLA #1-9 and JLA SECRET FILES #1.

They are the world's gravest super-villains: Ultraman, Owlman, Superwoman, Power Ring and Johnny Quick--the legendary Crime Syndicate of Amerika! Nothing has ever seriously threatened the global corruption they proudly enforce, but now a twisted mirror image of the CSA has arrived from the flip side of reality. Can anything stop this so-called JUSTICE LEAGUE, or will the stable, perfect evil of the Earth 2 fall victim to the tyranny of law, righteousness and freedom?

Comics legend Grant Morrison (ALL STAR SUPERMAN, FINAL CRISIS) delivers his unique take on the adventures of the World's Greatest Super-Heroes! This volume features a cosmic adventure on a grand scale as the Justice League faces off against Lex Luthor's newly assembled Injustice Gang while the fate of the Earth itself hangs in the balance. Plus, the heroes must race through time to stop a threat to all eternity: the evil god Darkseid. This volume collects JLA 10-17, Prometheus (Villains) #1, JLA/WildC.A.T.s #1, and JLA Secret Files #2.

Comics legend Grant Morrison (ALL STAR SUPERMAN, FINAL CRISIS) delivers his unique take on the adventures of the World's Greatest Super-Heroes! The JLA's very first foe, Starro the Conqueror, returns in a new guise as the Star Conquerer! But help arrives in the form of an unexpected ally: Daniel, The Lord of Dreams, from the pages of THE SANDMAN. And when Earth is threatened by beings of seemingly unlimited power -- beings reminiscent of the genies, and fairies of ancient myth -- members of both the JLA and the JSA rush to answer a challenge that may be beyond their power. Collects issues #...

The World's Greatest Heroes have faced countless threats and the deadliest of enemies and have barely come out alive each time. So what happens when Mageddon - the doomsday weapon of the Old Gods - attempts to end all of existence...at the same time the JLA's greatest foes band together as a brand new Injustice Gang? World War III is upon us and could be the end of the Justice League...and the world. This volume collects JLA #32-46.