Millions of people have vanished without a trace. No one is left unaffected – not even Superman! But after a year, the Man of Steel is left with many questions. As the action heats up and the stakes are raised, just how far is Superman willing to go ‘for tomorrow’?

ACTION COMICS #241 Originally published in June 1958.

While testing a new metal compound in his fortress of Solitude, Superman finds evidence of a break-in. Who is the mysterious intruder in the Man of Steel’s Arctic lair?