Subject Matter
Genres:
superhero
Character(s):
Mr. Jenkins; Zo-Mar (introduction, villain); Phantom Zone inhabitants [General Zod; Jax-Ur]; Miss Bernstein
First Line:
One thing I've always wondered about, Superman.
Synopsis:
At the Daily Planet, the Challengers of the Unknown seek help to contact Superman to help them solve the mystery of a card with a Kryptonian letter. Superman uses his mind-prober ray to recall Zo-Mar, a Kryptonian criminal shot into space before the discovery of the Phantom Zone, and his mind-slaving card. Superman and the Challs find Zo-Mar, but he enslaves them all with his card. The card, however, inhibits Kryptonian super-powers, and when Superman and the Challs trick Zo-Mar into grabbing the card, they make him weak enough that Superman can knock him out and send him to the Phantom Zone.
Reprinting
Reprint Notes:
Miscellaneous
Pages:
24
Notes:
Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics.
Pages 3-9 were originally created as a Challengers of the Unknown story to appear in Adventure Comics (DC, 1938 series) #498.