All-Star Comics #52

In "The Secret Conquest of the Earth! [Part I]," the Justice Society of America is pulled into a mystery in Africa when Professor Matthews reveals the existence of four ancient kings from a lost super-race. After the kings are awakened from suspended animation, the JSA is plunged into a year-long slumber—waking to find the world in chaos and four new warlords rising. The team splits up to confront the threats, but the true danger may be just beginning.

In "The Secret Conquest of the Earth! Part II," Hawkman and Wonder Woman race to stop Mr. Prince from manipulating a South American leader into declaring war, uncovering his ties to an ancient super race. As they expose his schemes to the Blue Shirts, the villain slips away—only for the same pattern to repeat with Mr. Monarch in southeastern Europe, where the Flash and Black Canary must reveal his true identity before the Gladiator Party of Monarch unleashes chaos.

In "The Secret Conquest of the Earth! Part III," the Justice Society of America races to stop a global conspiracy as the Masked One’s schemes unfold across continents—foiling a trap in Africa, battling mental manipulation in Washington, D.C., and confronting the Four Kings in a final showdown to prevent atomic destruction. With the JSA united and Professor Matthews’ help, they pursue shadowy foes whose true plans remain hidden in the shadows.