Superman#213
Cover: Neal Adams
Superman #213
“The Most Dangerous Door in the World!”
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Cast · 4 characters
Full credits
Full plot ⚠ may contain spoilers
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In his Fortress of Solitude, Superman disassembles a strange machine he found in space. When the machine explodes and destroys the Earth, Superman, Supergirl and Krypto are the only survivors.
Plot details indexed by the Grand Comics Database (CC BY-SA).