Comic Title: Justice League of America #81
Publisher: DC (National Periodical Publications, Inc.)
Address: 909 Third Avenue, New York, NY
Cover Date: June 1970
On Sale Date: April 28, 1970 Copyright Date April 28, 1970
Source: Library of Congress, Periodicals 1970

Frequency: Monthly, (with the exception of Jan., Apr., July, and Oct. (semi-monthly, Nov.)
Cover Price: $0.15
Page Count: 32
Editor: Julius Schwartz

Title: "Plague of the Galactic Jest-Master"
Pages: 24

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

Writer: Dennis J. O'Neil
Penciller: Dick Dillin
Inker: Joe Giella
Letterer: John Costanza

Reprinted In:
Showcase Presents:Justice League of America Vol. 4 TPB (2009)
Justice League of America Archives Vol. 10 HC (2012)
Justice League of America:The Bronze Age Omnibus Vol. 1 HC (2017)
Justice League of America:The Last Survivors of Earth TPB (2019)

Feature Character(s)

• Justice League of America (last appearance in Justice League of America #80; next appearance in Flash #199)
• Superman (last appearance in Superman's Pal Jimmy Olsen #129; next appearance in World's Finest Comics #194)
• Batman (last appearance in Brave & the Bold #90; next appearance in World's Finest Comics #194)
• Flash (last appearance in Flash #198; next appearance in Flash #199)
• Hal Jordan (last appearance in Green Lantern #77; next appearance in Green Lantern #78)
• Oliver Queen (last appearance in Green Lantern #77; next appearance in Green Lantern #78)
• Atom (last appearance in Justice League of America #80; next appearance in Justice League of America #82)
• Hawkman (last appearance in Justice League of America #80; next appearance in Flash #199)
• Black Canary (last appearance in Justice League of America #80; next appearance in Green Lantern #78)

Villain(s)

• The Jest-Master and his disciples (no further appearances)
• Norch Lor (last appearance in Justice League of America #80; no further appearances)

Guest Appearance(s)

• Jean Loring (last appearance in Justice League of America #80; next appearance in Detective Comics #432)
• Guardians of the Universe (last appearance in Green Lantern #77; next appearance in Green Lantern #80)

Other Character(s)

• Ra Lef (a Thanagaran security officer; no further appearances)

Comments:
Hal Jordan and Oliver Queen are shown to be unavailable for duty as they are on a cross-country journey.

Synopsis:
The Atom and Hawkman travel to Thanagar seeking a cure for Jean Loring's madness and to drop off the prisoner Norch Lor. They find the planet engulfed in an area of chaos which drives everyone therein to madness. The two heroes end up fighting the security forces, then each other.

The situation on Thanagar provokes the involvement of the Guardians of the Universe. They relay a message to Hal Jordan who summons the Justice League. Superman, Batman, Flash, and Black Canary then head to Thanagar to investigate. They stop Hawkman from killing the Atom, but they too are soon driven to madness. Superman is able to pull them away from the planet. Once out of range, their senses are restored.

The team soon realizes that the madness had the opposite effect on Jean Loring. While in the chaotic region, she her sanity returned. They use Jean to enter the chaos where they discover the cause. An alien called the Jest-Master who is testing planets by driving their populations mad. The team is then able to defeat him. As a result of her involvement, Jean Loring is also cured of her madness.