Comic Title: Justice League of America #41
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: December 1965
On Sale Date: October 28, 1965 Copyright Date October 28, 1965
Source: Library of Congress, Periodicals 1965

Frequency: Monthly, with the exception of Jan., July and Oct.; (semi-monthly, Nov.)
Cover Price: $0.12
Page Count: 32
Editor: Julius Schwartz

Title: "The Key-Master of the World"
Pages: 24

Feature(s):
Justice League of America (of Earth-1)

Writer: Gardner F. Fox
Penciller: Mike Sekowsky
Inker: Bernard Sachs

Reprinted In:
Justice League of America Archives Vol. 6 HC (2000)
Showcase Presents:Justice League of America Vol. 3 TPB (2008)
Justice League of America:The Silver Age Omnibus Vol. 2 HC (2016)
Justice League of America:The Silver Age Vol. 4 TPB (2018)

Feature Character(s)

• Justice League of America (last appearance in Justice League of America #40; next appearance in Flash #158)
• Superman (last appearance in Action Comics #331; next appearance in Superman #182)
• Batman (last appearance in Detective Comics #346; next appearance in Teen Titans #1)
• Flash (last appearance in Flash #157; next appearance in Teen Titans #1)
• Green Lantern (last appearance in Green Lantern #41; next appearance in Green Lantern #42)
• Wonder Woman (last appearance in Brave and the Bold #63; next appearance in Teen Titans #1)
• Aquaman (last appearance in Showcase #59; next appearance in Aquaman #25)
• Martian Manhunter (last appearance in House of Mystery #155; next appearance in House of Mystery #156)
• Green Arrow (last appearance in Justice League of America #40; next appearance in Justice League of America #44)
• Atom (last appearance in Batman #177; next appearance in Atom #23)
• Hawkman (last appearance in Hawkman #11; next appearance in Flash #158)

Supporting Character(s)

• Snapper Carr (last appearance in Justice League of America #40; next appearance in Justice League of America #43)

Villain(s)

• Key (next appearance in Justice League of America #63)
• The Key-Men (next appearance in Justice League of America #63)
• The Sandy Salters gang (no further appearances)
• Wrecker (last appearance in Detective Comics #197; no further appearances)
• Wrecker's followers (no further appearances)
• Weather Wizard (last appearance in Flash #145; next appearance in Detective Comics #353)
• Invisible Destroyer (last appearance in Showcase #23; no further appearances)
• The Monarch Butterflies (a group of costumed criminals; no further appearances)

Guest Appearance(s)

• Hawkgirl (last appearance in Hawkman #11; next appearance in Hawkman #12)
• Robin (last appearance in Detective Comics #346; next appearance in Teen Titans #1)

Comments:
Hawkman learns the secret identities of all the Justice League members in this story.

Aquaman and Green Arrow appear only briefly in this story.

Synopsis:
Through a mind-controlled Snapper Carr, the Key is able to use psycho-chemicals to control the Justice League and induce them to disband. Later, while involved in individual cases, the ex-members are unable to see or hear the Key's henchmen committing crimes before their very eyes. Their aides, such as Robin, are likewise afflicted, since the controlled heroes have been commanded to pass on the psycho-chemical to their partners.

The only exception is Hawkgirl, who has accidentally missing drinking the potion. She alerts Hawkman, and using their Absorbascon, they learn the secret identities of the other members in order to contact them and reform the team.

Cured of the chemicals by Thanagarian science, the super-heroes track down the Key, who is using their own Secret Sanctuary as his headquarters. Invading their former meeting place through the phone lines, the Atom sabotages the Key's controlling machinery, preventing him from retaking command of their minds. The other heroes battle the villain's unleashed key-weapons, and eventually overwhelm him.