Comic Title: Superman #21
Publisher: DC (Superman, Inc.)
Address: 480 Lexington Avenue, New York, NY
Cover Date: Mar/Apr 1943
On Sale Date: December 30, 1942 Newsstand Date December 30, 1942
Source: House Ad, Action Comics #57, Page 16

Copyright Date January 2, 1943
Source: Library of Congress, Periodicals 1943
Until 1958 DC did not report actual on sale dates to the copyright office
The publication dates listed in LoC records are NOT release dates.

Frequency: Bi-monthly
Cover Price: $0.10
Page Count: 64
Editor: Jack Schiff

Title: "The Four Gangleaders"
Pages: 13

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

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

Reprinted In:
Superman Archives Vol. 6 HC (2003)
Superman:The Golden Age Omnibus Vol. 3 HC (2017)

Feature Character(s)

• Superman (last appearance in Superman #21; next appearance in Superman #21)

Supporting Character(s)

• Lois Lane (last appearance in Action Comics #57; next appearance in Superman #21)
• Perry White (last appearance in Superman #21; next appearance in Superman #21)
• Sergeant Casey (last appearance in Superman #21; next appearance in Superman #21)

Villain(s)

• Kingsley, Cordell, Graham, and Graney (gang leaders; all die in this story; no further appearances)
• Charles Clayton (a murderer; no further appearances)

Synopsis:
Four mob leaders meet to discuss peace between the rival gangs. After the meeting one of the gang leaders is killed in an explosion. Reporter Lois Lane believes he was murdered by one of the other bosses. As Lois investigates the case, another mobster is killed with a car bomb. Lois is kidnapped by one of the gang leaders who believes she has information. Superman stages a rescue, as the final two bosses fight to question Lois. Neither man is the killer. Charles Clayton, another reporter, has killed the gang leaders in order to take control of their organizations. He intends to frame Clark as he murders the last two bosses. Clark stands up for himself and knocks out Clayton much to the surprise of Lois.