Challengers of the Unknown #69

From the cover by Joe Kubert, three Challengers in their familiar yellow jumpsuits huddle in apparent crisis — speech balloons cry out "P-Prof is dead!" and "This is the end of the Challengers!" — while a massive shadowy figure looms behind them, answering back with a chilling "Wrong! I'm your new Challenger!" It's a masterfully staged cover that sets up a dramatic shake-up for the team, perfectly capturing the late-'60s DC taste for bold, soap-operatic tension. With Denny O'Neil scripting and Jack Sparling on interior art, "The Secret of Skull Mountain" promises the kind of pulpy adventure that made this series such a durable corner of the DC universe.