Comic Title: Action Comics #400
Publisher: DC (National Periodical Publications, Inc.)
Address: 909 Third Avenue, New York, NY
Cover Date: May 1971
On Sale Date: March 30, 1971 Copyright Date March 30, 1971
Source: Library of Congress, Periodicals 1971

Frequency: Monthly
Cover Price: $0.15
Page Count: 32
Editor: Murray Boltinoff

Title: "My Son... Is He Man or Beast?"
Pages: 14

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

Writer: Leo Dorfman
Penciller: Curt Swan
Inker: Murphy Anderson
Letterer: John Costanza

Feature Character(s)

• Superman (last appearance in Action Comics #403; next appearance in Action Comics #400)

Villain(s)

• A group of poachers (no further appearances)

Other Character(s)

• Gregor Nagy (the son of a scientist; dies in this story; no further appearances)
• Jan Nagy (a scientist; in flashback; no further appearances)
• Denise (Gregor's girlfriend; no further appearances)
• A music teacher (no further appearances)

Synopsis:
Superman attends the funeral of scientist Jan Nagy. Superman once prevented a disaster caused by Nagy's experiments with metamorphon, an artificial element. However, Nagy's son Gregor was accidentally exposed. Gregor now transforms into beasts uncontrollably. Gregor hates Superman for his affliction and is further disturbed when his father's will appoints Superman as his guardian.

Superman attempts to help Gregor use his abilities for good. However, the boy's comtempt for the Man of Steel remains. When showing Gregor his Fortress, Superman is forced to leave to repair a satellite. An emergency call is received moments late. Gregor leaves to help a damaged submarine. However, his transformation does not last long enough. The crushing pressure of the ocean results in his death. As Superman carries the dying boy ashore, Gregor reconciles and makes peace with his guardian.