Comic Title: Action Comics #366
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: August 1968
On Sale Date: June 27, 1968 Copyright Date June 27, 1968
Source: Library of Congress, Periodicals 1968

Newsstand Date June 27, 1968
Source: Comic Reader, #66

Frequency: Monthly (semi-monthly, March)
Cover Price: $0.12
Page Count: 32
Editor: Mort Weisinger

Title: "Substitute Superman"
Pages: 13

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

Writer: Leo Dorfman
Penciller: Ross Andru
Inker: Michael Esposito

Feature Character(s)

• Superman (last appearance in Action Comics #365; next appearance in World's Finest Comics #175)

Guest Star(s)

• Supergirl (last appearance in Action Comics #365; next appearance in World's Finest Comics #176)
• Justice League of America (last appearance in Action Comics #365; next appearance in Justice League of America #63)
• Batman (last appearance in Action Comics #365; next appearance in World's Finest Comics #175)
• Flash (last appearance in Action Comics #365; next appearance in World's Finest Comics #175)
• Green Lantern (last appearance in Action Comics #365; next appearance in Justice League of America #63)
• Aquaman (last appearance in Aquaman #39; next appearance in Justice League of America #63)
• Martian Manhunter (last appearance in Action Comics #365; next appearance in Justice League of America #71)

Supporting Character(s)

• Lois Lane (last appearance in Action Comics #365; next appearance in Superman's Girl Friend, Lois Lane #83)

Villain(s)

• Jax-Ur (last appearance in Action Comics #364; next appearance in Action Comics #368)
• Various criminals (no further appearances)

Other Character(s)

• Several Flammbronians (no further appearances)
• Several Kandorians (no further appearances)

Cameo Appearance(s)

• Superboy (in flashback)
• Two Bizarros (in flashback to the first story of Action Comics #365)

Comments:
This story is continued from the first story of Action Comics #365.

Synopsis:
Superman, suffering from the deadly Virus X, plunges into the distant sun Flammbron. The living flame creatures inside the sun protect the weakened Man of Steel from destruction. They then show him that he has been cured of the Kryptonian leprosy which was killing him. Superman realizes that the white kryptonite thrown at his rocket by the Bizarros killed the virus because it was a form of plant life.

Superman returns to Earth and is surprised that the world is not mourning him. He discovers that someone else has been posing as Superman. His initial attempts to learn this person's identity fail, but he eventually realizes that his Justice League friends are responsible. Superman meets them at the Secret Sanctuary and announces his return.