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Action Comics#377
Cover: Curt Swan & Neal Adams
Action Comics #377
“The Cage of Doom!”
writer Jerry Siegel · artist, inker John Forte · artist, inker Al Plastino · letterer Milt Snapinn · cover Curt Swan, Neal Adams
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Full credits
writer Jerry Siegel
artist, inker John Forte
artist, inker Al Plastino
letterer Milt Snapinn
cover pencils Curt Swan
cover inks Neal Adams
Full plot ⚠ may contain spoilers
▸ Reveal full plot — may contain spoilers
At a regular meeting of the Legion of Super-Heroes, the Legionnaires lose control of their powers. Urthlo arrives and announces that he now controls the Legionnaires' powers and there is nothing they can do about it. But Saturn Girl comes up with a serum to temporarily cure Mon-El and immunize him against lead, and Superboy releases him from the Phantom Zone to knock out Urthlo, who turns out to be an automaton created by Lex Luthor sent into the future to destroy the Legion.
Plot details indexed by the Grand Comics Database (CC BY-SA).