Comic Title: Flash #151
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: March 1965
On Sale Date: January 21, 1965 Newsstand Date January 21, 1965
Source: House Ad, 80 Page Giant #8, Page 20

Copyright Date January 21, 1965
Source: Library of Congress, Periodicals 1965

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

Title: "Invader from the Dark Dimension"
Pages: 25

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

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

Reprinted In:
Crisis on Multiple Earths the Team Ups Vol. 1 TPB (2006)
Flash of Two Worlds HC (2009)
Showcase Presents:The Flash Vol. 3 TPB (2009)
Flash:The Silver Age Omnibus Vol. 2 HC (2017)
Flash:The Silver Age Vol. 4 TPB (2019)
Flash of Two Worlds Deluxe Edition HC (2020)

Feature Character(s)

• Flash of Earth-1 (last appearance in Detective Comics #336; next appearance in Flash #152)

Guest Star(s)

• Flash of Earth-2 (last appearance in Justice League of America #29; next appearance in Justice League of America #37)

Supporting Character(s)

• Iris West (last appearance in Detective Comics #336; next appearance in Flash #152)

Villain(s)

• Shade (last appearance in Flash #123; next appearance in Justice League of America #123)

Guest Appearance(s)

• Joan Garrick (last appearance in Flash #137; next appearance in Flash #173)

Synopsis:
A strange black force engulfs a jewelry store in Central City. The Flash is unable to penetrate the black mass. Eventually the blackness dissipates on its own, but all the jewels are gone. When similar black forces appear elsewhere, Flash traces their vibrational patterns to those produced by the Shade's cane.

Flash vibrates his way to Earth-2 where he joins forces with Jay Garrick, the original Flash. The Shade has been robbing on Earth-1, but living on Earth-2. When Garrick confronts him, the Shade traps him in a black light force field. Barry is unable to rescue his friend, so he returns to Earth-1 in pursuit of the Shade.

The Shade continues to use his black force to rob on Earth-1. The force seems impenetrable for the Flash, until he realizes that the Shade is allowing valuables to pass through. Flash coats himself in gold. When he comes in contact with the blackness, he enters the Shade's dark dimension. He then subdues his foe. Using the Shade's own cane, Barry releases Jay and restores order to Earth-1.