World's Finest Comics #20
In "The Toyman: Super-Scientist!", Superman faces a clever twist when the Toyman uses his latest invention, the human wavelength detector, to track the hero down—only to find the device tuned to pick up Superman’s unique energy signature. Written by Jerry Siegel and illustrated by Joe Shuster, with inks by Don Komisarow, this 1945 adventure blends sci-fi intrigue with classic superhero action. The cover, by Jack Burnley and Charles Paris, captures the tension of the moment with a striking image of the Toyman’s trap in full view.
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Superman must retrieve a super secret invention, the human wavelength detector, from the clutches of the Toyman, but finds it a challenge as the villain has set the machine to pick up the electrical vibrations of the Man of Tomorrow.
Plot details indexed by the Grand Comics Database (CC BY-SA).