Comic Title: Superman #21
Publisher: DC
Cover Date: September 1988
On Sale Date: May 17, 1988 Shipping Date May 17, 1988
Source: Comics Buyers Guide, #750, Page 40

Shipping Date May 17, 1988
Source: Comics Buyers Guide, #756, #758

Copyright Date May 17, 1988
Source: Library of Congress, Copyright Office 1988

Newsstand Date May 31, 1988
Source: Comics Buyers Guide, #756, #758

Shipping Date April 19, 1988
Source: Direct Currents, #3

Shipping Date April 19, 1988
Source: Amazing Heroes, #138

Newsstand Date May 12, 1988
Source: Amazing Heroes, #138

Cover Price: $0.75
Page Count: 32
Editor: Mike Carlin

Title: "You Can't Go Home Again"
Pages: 22

Feature(s):
Superman (Post-Crisis)

Writer/Penciller: John L. Byrne
Inker: John R. Beatty
Letterer: John Costanza
Colorist: Petra Scotese (Goldberg)

Reprinted In:
Superman:The Man of Steel Vol. 9 TPB (2017)
Superman:The Man of Steel Vol. 4 HC (2022)

Feature Character(s)

• Superman (last appearance in Action Comics Weekly #606; next appearance in Adventures of Superman #444)

Supporting Character(s)

• Lois Lane (last appearance in Action Comics Weekly #606; next appearance in World of Metropolis #2)
• Jimmy Olsen (last appearance in Adventures of Superman #443; next appearance in Adventures of Superman #445)
• Perry White (last appearance in World of Metropolis #1; next appearance in Adventures of Superman #445)
• Supergirl (last appearance in Superman #20; next appearance in Adventures of Superman #444)
• Lana Lang (last appearance in Superman #20; next appearance in Superman #22)
• Jonathan Kent (last appearance in Superman #20; next appearance in Superman #22)
• Martha Kent (last appearance in Superman #20; next appearance in Superman #22)

Villain(s)

• Lex Luthor (last appearance in Superman #19; next appearance in Adventures of Superman #445)

Other Character(s)

• Lex Luthor (from the Pocket Universe; first appearance; last appearance in Adventures of Superman #444; next appearance in Adventures of Superman #444)
• Pete Ross (from the Pocket Universe; last appearance in Adventures of Superman #444; next appearance in Adventures of Superman #444)

Cameo Appearance(s)

• Superboy (from the Pocket Universe; in flashback)
• Legion of Super-Heroes (in flashback)
• Blok (in flashback)
• Brainiac 5 (in flashback)
• Invisible Kid (in flashback)
• Sun Boy (in flashback)
• Time Trapper (in flashback)

Comments:
This story continues in Adventures of Superman #444.

Synopsis:
Superman senses that he is being followed while flying through the sky. He takes evasive action which causes his pursuer to reveal herself. Following him is a blond girl in a costume resembling his own. When confronted her facial features shift into those of Lana Lang. She claims that she was given super powers by Lex Luthor. When Superman reacts to this, the girl becomes confused and attacks him.

After Superman is knocked to the ground, he tunnels under the Earth to the home of Lana Lang. He finds Lana and the Kents tied up inside her house. After releasing them, Superman realizes where the other Lana originated. He engages the costumed girl again and is able to get her to stop fighting long enough to introduce her to Lex Luthor in Metropolis.

Supergirl is shocked out of her confusion. Superman then explains that she must have come from the universe created by the Time Trapper that he once visited. Just then a vortex opens which brings Superman and Supergirl to the other universe where Lex Luthor is waiting.