Comic Title: Flash #129
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: June 1962
On Sale Date: April 19, 1962 Copyright Date April 19, 1962
Source: Library of Congress, Periodicals 1962

Frequency: Monthly, with the exception of January, April, July and October
Cover Price: $0.12
Page Count: 32
Editor: Julius Schwartz

Title: "Double Danger on Earth"
Pages: 25

Feature(s):
Flash (Barry Allen of Earth-1)

Writer: Gardner F. Fox
Penciller: Carmine Infantino
Inker: Joe Giella

Reprinted In:
Flash #178 (1968)
Crisis on Multiple Earths the Team Ups Vol. 1 TPB (2006)
Flash Archives Vol. 4 HC (2006)
Showcase Presents:The Flash Vol. 2 TPB (2008)
Flash of Two Worlds HC (2009)
Flash Omnibus Vol. 1 HC (2014)
Flash:The Silver Age Vol. 2 TPB (2017)
Flash of Two Worlds Deluxe Edition HC (2020)

Feature Character(s)

• Flash of Earth-1 (last appearance in Green Lantern #13; next appearance in Justice League of America #12)

Guest Star(s)

• Flash of Earth-2 (last appearance in Flash #123; next appearance in Flash #137)

Supporting Character(s)

• Iris West (last appearance in Green Lantern #13; next appearance in Flash #131)

Villain(s)

• Captain Cold (last appearance in Justice League of America #5; next appearance in Flash #134)
• Trickster (last appearance in Flash #121; next appearance in Flash #130)

Guest Appearance(s)

• Joan Garrick (last appearance in Flash #123; next appearance in Flash #137)

Cameo Appearance(s)

• Justice Society of America (in flashback to the first story of All-Star Comics #57)
• Green Lantern (of Earth-2; in flashback to the first story of All-Star Comics #57)
• Atom (of Earth-2; in flashback to the first story of All-Star Comics #57)
• Hawkman (of Earth-2; in flashback to the first story of All-Star Comics #57)
• Doctor Mid-Nite (in flashback to the first story of All-Star Comics #57)
• Black Canary (in flashback to the first story of All-Star Comics #57)
• Wonder Woman (of Earth-2; in flashback to the first story of All-Star Comics #57)
• Key (of Earth-2; in flashback to the first story of All-Star Comics #57)

Comments:
The flashback sequence of this story briefly relates the first story of All-Star Comics #57. The Justice Society of America appear in the flashback and will make their first modern appearance in Flash #137.

Synopsis:
Earth-2 is imperiled by deadly radiation which was created when a comet struck the sun. The Flash of Earth-2, Jay Garrick, desperately seeks a method to remove the radiation as the radiation is killing all life on Earth. A meteorite in the Arizona desert is absorbing the radiation, but it has mysteriously disappeared. Garrick theorizes that an identical meteorite should be on Earth-1. He travels between Earths to bring back the meteorite and save his world.

On Earth-1, Barry Allen and Iris West are attending a costume party for charity. The charity proceeds are stolen by Captain Cold. The Trickster, who also has come to steal the money, steps in and takes the loot from Cold. Garrick arrives on the scene looking for Barry and spots the theives. Barry, seeing the battle, races to help in his Flash identity. Confronted by two Flashes, the villains team-up to escape with the money.

With the crooks out of sight, Jay explains to Barry the problem on his world. Barry makes arrangements for Jay to aquire the meteorite. Using his powers Jay is able to dig it up and break it into smaller pieces.

Before transporting the fragments back to his world, Jay agrees to help Barry catch the crooks. They bait a trap for the pair which reveals that valuable diamonds were found in the meteorite. Captain Cold and the Trickster show up to steal the diamonds, and the Flashes are able to follow them back to their hide-out and capture them.

With the villains taken out of action, Jay transports the fragments back to Earth-2. The meteorite dust removes the radiation and saves the world. The dust is also synthesized so when the same disaster strikes Earth-1, the synthetic dust is able to protect that world as well.