SCIENCE SUPERHEROES FROM FROM EISNER-NOMINATED WRITER CHRISTOPHER CANTWELL! The terror of the Darkseid shock wave has cascaded across the DC Universe…tearing open the very fabric of time and space itself! Lo and behold, only one band of super-scientists have the right stuff to challenge the fate of the universe: the Challengers of the Unknown. Ace Morgan, June Robbins, Prof Haley, Red Ryan, and Rocky Davis, adventurers “living on borrowed time,” run day-to-day operations for the Justice League’s Watchtower base in orbit above Earth, collaborating with Superman, Batman, Wonder Woman, and the rest of the League to seal the rifts that threaten the galaxy. But a mysterious foe from the Challengers’ past lurks in the shadows, and its connection to the Darkseid wave will put not only the Challengers, but all of the DC Universe on borrowed time.
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