All-Star Comics #45

The Rocky Castle Gang is on the lam from the Police, who are in pursuit of the Gang's car when it just disappears without a trace! The JSA decides to investigate and comes upon an isolated cottage and hear cries for help. Entering, they discover a helpless Dr. Egri tied up in his lab, who explains his experiments with cosmic radiation. He explains the Rocky Castle Gang has stolen plutonium enriched items, which possess unlimited cosmic power. He's scared of the damage the gang can now inflict on mankind, so most of the JSA head out to four places where cosmic radiation has been strongest.