Comic Title: Superman #20
Publisher: DC
Cover Date: August 1988
On Sale Date: April 19, 1988 Shipping Date April 19, 1988
Source: Comics Buyers Guide, #750, Page 40

Shipping Date April 19, 1988
Source: Comics Buyers Guide, #752, #754

Copyright Date April 19, 1988
Source: Library of Congress, Copyright Office 1988

Newsstand Date May 3, 1988
Source: Comics Buyers Guide, #752, #754

Shipping Date April 5, 1988
Source: Amazing Heroes, #137

Shipping Date April 5, 1988
Source: Direct Currents, #2

Newsstand Date April 28, 1988
Source: Amazing Heroes, #137

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

Title: "Doom in the Heartland"
Pages: 22

Feature(s):
Superman (Post-Crisis)

Writer/Artist: John L. Byrne
Inker: Karl Kesel
Letterer: John Costanza
Colorist: Petra Scotese (Goldberg)

Reprinted In:
Superman:The Man of Steel Vol. 9 TPB (2017)
Doom Patrol:The Bronze Age Omnibus HC (2020)
Doom Patrol by John Byrne:The Complete Series HC (2020)
Superman:The Man of Steel Vol. 4 HC (2022)

Feature Character(s)

• Superman (see comment below; last appearance in Adventures of Superman #442; next appearance in Action Comics Weekly #601)

Guest Star(s)

• Doom Patrol (last appearance in Doom Patrol #10; next appearance in Doom Patrol #11)
• Robotman (last appearance in Doom Patrol #10; next appearance in Doom Patrol #11)
• Celsius (last appearance in Doom Patrol #10; next appearance in Doom Patrol #11)
• Tempest (last appearance in Doom Patrol #10; next appearance in Doom Patrol #11)
• Negative Woman (last appearance in Doom Patrol #10; next appearance in Doom Patrol #11)
• Lodestone (last appearance in Doom Patrol #10; next appearance in Doom Patrol #11)
• Karma (last appearance in Doom Patrol #10; next appearance in Doom Patrol #11)
• Scott Fischer (last appearance in Doom Patrol #10; next appearance in Doom Patrol #11)

Supporting Character(s)

• Lois Lane (last appearance in Adventures of Superman #442; next appearance in Action Comics Weekly #639)
• Jimmy Olsen (last appearance in Adventures of Superman #442; next appearance in Superman Annual #2)
• Perry White (last appearance in Action Comics #600; next appearance in Action Comics Weekly #610)
• Catherine Grant (last appearance in Superman #19; next appearance in Adventures of Superman #445)
• Lana Lang (last appearance in Adventures of Superman #442; next appearance in Superman #21)
• Jonathan Kent (last appearance in World of Smallville #4; next appearance in Superman #21)
• Martha Kent (last appearance in Adventures of Superman #440; next appearance in Superman #21)
• Supergirl (see comment below; last appearance in Adventures of Superman #442; next appearance in Superman #21)
• Maggie Sawyer (last appearance in Superman #19; next appearance in Superman Annual #2)

Villain(s)

• Metallo (last appearance in Doom Patrol #10; next appearance in Action Comics #647)

Other Character(s)

• Alice (last appearance in Superman #17; next appearance in Superman #25)
• An unnamed coroner (last appearance in Superman #17; no further appearances)
• Janet Jones (last name revealed; last appearance in Adventures of Superman #441; no further appearances)
• Doctor Howard (last appearance in Adventures of Superman #438; next appearance in Adventures of Superman #445)
• An unidentified murder victim (no further appearances)

Cameo Appearance(s)

• Lex Luthor (in flashback)

Comments:
This story is continued from Doom Patrol #10. Superman's appearance in that story takes place between panels 4 and 5 on page 7 of this story.

Synopsis:
In Smallville, Lana Lang introduces Supergirl to Jonathan and Martha Kent. A short time later Superman returns to town for a picnic with Lana. However, he is called away to help the Doom Patrol in its battle with Metallo. However, this Lana is really Supergirl in disguise. She has been regaining her memory and thinks about the mission given to her by Lex Luthor.

Meanwhile Superman has located the Doom Patrol. Several of their members are injured and must remain behind, while the Man of Steel tracks down Robotman and Metallo. At his request, Superman decapitated Robotman who has fallen under Metallo's control. When the robotic villain tries to kill Negative Woman, Scott Fischer stops him and superheats his metallic body. Celsius uses her cold powers to finish off Metallo. However, when Superman gathers his pieces, Metallo's head is missing.