"New York Times"-bestselling novelist Meltzer and top comics illustrator Johns bring together the two top super-teams in this graphic novel, now in trade paperback.

The Justice League must work together to help the Legion of Super-Heroes, a group of heroes from the 31st century, complete their mission.

#1 New York Times best-selling novelist Brad Meltzer joins forces with legendary comics writer Geoff Johns for this incredible graphic novel bringing together the DC Universe's top super-teams! Two of DCs biggest crews of superheroes--the Justice League of America, featuring Superman, Batman, Wonder Woman and more--and the Justice Society of America, including Hawkman, Wildcat and others join forces in this stunning graphic novel! The JLA has discovered that several members of the Legion of Super-Heroes from the 31st century are in the present. With the help of the JSA, Superman and his team must track down all seven Legionnaires to discover why these heroes of the future have traveled back in time! Collects JUSTICE LEAGUE OF AMERICA #0 and #8-12 and JUSTICE SOCIETY OF AMERICA #5-6!

Red Tornado, the android hero, has been wounded and this sets into motion a chain of events that could lead either to the destruction of the JLA or to the birth of a new JLA.

Written by Brad Meltzer and Geoff Johns Art by Ed Benes, Shane Davis, Dale Eaglasham, Jim Lee, Adam Kubert, George P�rez, and others Cover by Michael Turner Two of DC's most prominent super-teams join forces in this stunning hardcover volume collecting JUSTICE LEAGUE OF AMERICA #0 and #8-12 and Justice Society of America #5-6! In the wake of "The Tornado's Path," the JLA has discovered the existence of several members of the Legion of Super-Heroes in the present. With the help of the JSA, Superman and his team must track down all seven Legionnaires to discover why these heroes of the future have traveled back in time!

The world's greatest heroes, Batman, Green Lantern, The Atom and many more, unite to fight the forces of evil. But can the team get it together in time to survive the return of the undead, villainous Dr Light.