Superman is the target of Lex Luthor's deadliest scheme. The cruel genius has poisoned criminal John Corbin. He withholds the antidote until Corbin makes a promise: he will let Luthor turn him into a robot powered by kryptonite. But once the creature named Metallo discovers that he is more machine than human, revenge fills his strange heart.
Writing a summary for young readers…
For young readers
Book data: Open Library