As a massive crime wave unfolds, Superman vows to put top mobsters behind bars. His ultimate target is the mysterious No. 1 man. The top criminal devises a powerful electrical trap for the Man of Steel.
A frantic woman bursts into the offices of the Daily Planet, demanding to speak to Superman-and makes a beeline to the office of Clark Kent. Clarke must find out how has Harriet managed to crack the secret.
During a robbery probe, Superman proposes to a blonde.
A wealthy girl tries to hire Superman for a party.
A university researcher drops dead after being injected with the new wonder tranquilizer she's been working on; The syringe was filled with curare and a research student is charged with her murder.