Adventure Comics #497
The not-yet-Challengers investigate who sabotaged their plane. Red Ryan escorts an old friend, Johnny Green, in Las Vegas, when a car tries to run them down! Johnny explains HE was the target, not the heroes. Johnny won $300,000 from mobsters but hadn't collected. He was to fly to Vegas with Red. Mobsters planted a plastic sabotage device to crash the plane: plastic to fool metal detectors. The heroes meet the mobsters. A fight brings "Chaos in the Casino". Johnny gets paid and the mob goes to jail. And the heroes finally get their TV appearance as "Challengers of the Unknown!"
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The not-yet-Challengers investigate who sabotaged their plane. Red Ryan escorts an old friend, Johnny Green, in Las Vegas, when a car tries to run them down! Johnny explains HE was the target, not the heroes. Johnny won $300,000 from mobsters but hadn't collected. He was to fly to Vegas with Red. Mobsters planted a plastic sabotage device to crash the plane: plastic to fool metal detectors. The heroes meet the mobsters. A fight brings "Chaos in the Casino". Johnny gets paid and the mob goes to jail. And the heroes finally get their TV appearance as "Challengers of the Unknown!"
Plot details indexed by the Grand Comics Database (CC BY-SA).