Detective Comics #24
In "Tic-Tac-Toe," Jerry Siegel and Joe Shuster deliver a wild, early adventure as Slam and Shorty bounce between bizarre futures and the present, facing strange threats in a world that's anything but ordinary. The story marks one of the earliest appearances of these characters in the DC Universe, with the duo’s chaotic journey landing them in a 1938 they’re eager to escape—just as Professor Kenton offers a ride into history. The cover by Fred Guardineer captures the moment with a striking, dynamic scene that perfectly sets the tone for the issue’s offbeat energy.
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Slam and Shorty are still in 2,000,000,000 A.D., where they encounter a variety of weird foes. Finally they return to 1938, but run when Professor Kenton offers to take them into the past.
Plot details indexed by the Grand Comics Database (CC BY-SA).
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