Comic Title: Superman #12
Publisher: DC (Superman, Inc.)
Address: 480 Lexington Avenue, New York, NY
Cover Date: Sep/Oct 1941
On Sale Date: July 2, 1941 Newsstand Date July 2, 1941
Source: House Ad, Action Comics #39, Page 14, Batman #6, Page 50

Copyright Date July 2, 1941
Source: Library of Congress, Periodicals 1941

Frequency: Bi-monthly
Cover Price: $0.10
Page Count: 64
Editor: Fredric Whitney Ellsworth

Title: (The Grotak Bund)
Pages: 13

Feature(s):
Superman (of Earth-2)

Writer: Jerry Siegel
Penciller: Leo Nowak
Inker: John Sikela

Reprinted In:
Superman Archives Vol. 3 HC (1991)
Superman Chronicles Vol. 7 TPB (2009)
Superman:The Golden Age Omnibus Vol. 2 HC (2016)
Superman:The Golden Age Vol. 4 TPB (2018)

Feature Character(s)

• Superman (last appearance in Superman #12; next appearance in Superman #12)

Supporting Character(s)

• Lois Lane (last appearance in Superman #12; next appearance in Superman #12)
• Perry White (last appearance in Superman #12; next appearance in Superman #12)
• Sergeant Casey (last appearance in Superman #12; next appearance in Action Comics #41)

Villain(s)

• Calvin Denby and the Grotak Bund (saboteurs; no further appearances)

Other Character(s)

• Stanley Pelham (a plant owner; no further appearances)

Comments:
This story originally was not titled; the title shown here was given on the contents page of Superman Chronicles Vol. 1 in which this story is reprinted.

Synopsis:
Factories in Metropolis have been sabotaged by members of a sabotage ring. Superman follows leads back to the meeting place of the Grotak Bund. He rounds up the gang, but the leader escapes. Later, Lois attends an interview of Calvin Denby. Superman then realizes that Denby is the head of the saboteurs and arrives in time to prevent Lois from being killed and arrest Denby.