THE CHALLENGERS INVESTIGATE THE AFTERMATH OF DARKSEID'S DEATH! Darkseid's death has sent a shockwave across the DC Universe, tearing open the very fabric of time and space itself! Only one band of super-scientists have the right stuff to face the fate of a universe. Enter...the Challengers of the Unknown. Ace Morgan, June Robbins, Prof Haley, Red Ryan, and Rocky Davis run day-to-day operations for the massive Watchtower in orbit above Earth. Now, they must team with Superman, Batman, Wonder Woman, and the rest of the Justice 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 Godshock will put the DCU on borrowed time! Collects the complete five-issue Challengers of the Unknown series by writer Christopher Cantwell and artists Sean Izaakse and Amancay Nahuelpan, plus Time Check by Christopher Cantwell and artist Jorge Fornes from the Batman/Superman: World's Finest 2024 Annual.