In the modern comics industry, you can’t go a single month without an issue that claims it “changes everything” and that “nothing will ever be the same.” It’s been a long time since those claims were true. Way back in 1940, though, there really was a Superman story that changed everything: “The K-Metal from Krypton.”
Superman #8 is notable for several reasons. It introduced K-Metal, a mineral from Krypton which rendered Superman powerless and which predates kryptonite. It made the groundbreaking decision to have Superman reveal his identity to Lois Lane. Finally, it was a rare issue written by Superman creator Jerry Siegel that DC chose never to publish.
That’s right – this daring, groundbreaking story that would have changed the Superman mythos forever never saw the light of day. It remained forgotten in the DC archives until Mark Waid came across the original script and story outline in 1988, almost half a century after it was supposed to be published.