Comic Title: Adventure Comics #238
Publisher: DC (National Comics Publications, Inc.)
Address: 480 Lexington Avenue, New York, NY
Cover Date: July 1957
Approx. On Sale Date: May 30, 1957 Copyright Date May 28, 1957
Source: Library of Congress, Periodicals 1957
Until 1958 DC did not report actual on sale dates to the copyright office
The publication dates listed in LoC records are NOT release dates.

Frequency: Monthly
Cover Price: $0.10
Page Count: 32
Editor: Mort Weisinger

Title: "The Secret Past of Superboy's Father"
Pages: 12

Feature(s):
Superboy (of Earth-1)

Writer: Otto Binder
Penciller: Curt Swan
Inker: Ray Burnley

Feature Character(s)

• Superboy (last appearance in Showcase #9; next appearance in Adventure Comics #239)

Supporting Character(s)

• Jonathan Kent (last appearance in Superboy #58; next appearance in Superboy #125)
• Martha Kent (last appearance in Superboy #58; next appearance in Superboy #125)

Villain(s)

• Doc Holton (a con man; uses the identity of Kan-Tu; no further appearances)

Cameo Appearance(s)

• Jor-El (in Superboy's dream)
• Lara (in Superboy's dream)

Synopsis:
Superboy is haunted by dreams in which his father is accused of stealing the rocket which brought Kal-El to Earth. He dreams that the real inventor of the rocket is a scientist named Kan-Tu, who he now sees on Earth. Kan-Tu explains that Jor-El did steal his invention, but he had another rocket which he used to escape Krypton’s fate.

Superboy is disheartened to learn that his father was a thief, but Kan-Tu agrees to keep it a secret if Superboy gathers radium for him. Kan-Tu plans to use it to help another planet. Superboy gathers the radium, but also uncovers the fact that Kan-Tu is really an Earthman who has tricked the Boy of Steel with a hypnotic suggestion. Finally he stops Kan-Tu, really Doc Holton, from escaping with the radium.