"Batman created by Bob Kane with Bill Finger - Wonder Woman created by William Moulton Marston - Nightwing created by Marv Wolfman & George Pérez - Superman created by Jerry Siegel and Joe Shuster, by special arrangement with the Jerry Siegel family"

"Originally published in single magazine form in DARK DAYS: THE FORGE 1, DARK DAYS: THE CASTING 1, FINAL CRISIS 6-7, BATMAN: THE RETURN OF BRUCE WAYNE 1, BATMAN 38-39, NIGHTWING 17, DETECTIVE COMICS 950, THE MULTIVERSITY GUIDEBOOK 1."--Title page verso.

For years, Batman has been tracking a mystery. He's quietly been pulling a thread, conducting research in secret laboratories across the globe and stowing evidence deep in the Batcave, hidden even from his closest allies. Now, in an epic story spanning generations, the heroes and villains of the DC Universe, including Green Lantern, The Joker, Wonder Woman and more, are about to find out what he's discovered--and it could threaten the very existence of the Multiverse!,Provided by publisher.