Comic Title: Superman #225
Publisher: DC (National Periodical Publications, Inc.)
Address: 909 Third Avenue, New York, NY
Cover Date: April 1970
On Sale Date: February 3, 1970 Copyright Date February 3, 1970
Source: Library of Congress, Periodicals 1970

Newsstand Date February 3, 1970
Source: Comic Reader, #77

Frequency: Monthly, with the exception of March and September
Cover Price: $0.15
Page Count: 32
Contains: Ownership Statement
Circulation: 512330
Editor: Mort Weisinger

Title: "The Secret of the Superman Imposter"
Pages: 23

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

Writer: Leo Dorfman
Penciller: Curt Swan
Inker: George Roussos

Feature Character(s)

• Superman (last appearance in World's Finest Comics #193; next appearance in Justice League of America #130)

Supporting Character(s)

• Lois Lane (last appearance in Superman's Pal Jimmy Olsen #127; next appearance in Superman #226)
• Jimmy Olsen (last appearance in Superman's Pal Jimmy Olsen #127; next appearance in Superman's Pal Jimmy Olsen #128)

Villain(s)

• The scientists of Voltran (Vrol named; no further appearances)
• A chromoplast Superman duplicate (no further appearances)
• Limehouse Lew and his men (no further appearances)

Other Character(s)

• A Superman robot (no further appearances)

Comments:
This story portends the invention of 3-D jigsaw puzzles which did not exist when this story was written.

Synopsis:
Aliens from the planet Voltran create a double of Superman which is exact in every way except one. It does not possess his super-powers. The aliens embed the double with a chip which transfers feelings to the real Man of Steel. When the imposter feels pain or other sensory perceptions, so does Superman.

Superman catches his double trying to break into the Fortress of Solitude. Since he is unable to break the link between them, the Man of Steel imprisons the imposter in the Fortress. When the double realizes that he is not the real Superman he kills himself using a metal melting blaster which dissolves the chip in his head. Superman feels a moment of pain, then the link between he and his double is broken forever.