Comic Title: Flash #174
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: November 1967
On Sale Date: September 5, 1967 Newsstand Date September 5, 1967
Source: Direct Currents, Detective Comics #368, Page 30

Copyright Date September 5, 1967
Source: Library of Congress, Periodicals 1967


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

Title: "Stupendous Triumph of the Six Super-Villains"
Pages: 23

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

Writer: John Broome
Penciller: Carmine Infantino
Inker: Sid Greene

Reprinted In:
Countdown Special:The Flash #1 (2007)
Showcase Presents:The Flash Vol. 4 TPB (2012)
Flash:A Celebration of 75 Years HC (2015)
Flash:The Silver Age Omnibus Vol. 3 HC (2018)

Feature Character(s)

• Flash (last appearance in Flash #173; next appearance in Justice League of America #57)

Supporting Character(s)

• Iris Allen (last appearance in Flash #173; next appearance in Flash #175)

Villain(s)

• Mirror Master (last appearance in Flash #161; next appearance in Flash #188)
• Captain Cold (last appearance in Flash #166; next appearance in Flash #193)
• Heat Wave (last appearance in Flash #166; next appearance in Flash #193)
• Captain Boomerang (last appearance in Flash #155; next appearance in Justice League of America #61)
• Top (last appearance in Flash #157; next appearance in Flash #219)
• Pied Piper (last appearance in Flash #164; next appearance in Flash #218)
• The Flash of a parallel world (no further appearances)

Other Character(s)

• The Mirror Master of a parallel world (no further appearances)
• The Central City police commissioner (no further appearances)

Synopsis:
Mirror Master escapes from prison after tuning in on a parallel dimension inside one of his special mirrors. The other Earth is inhabited by a crimefighting Mirror Master and a criminal Flash. Mirror Master observes his counterpart using a mirror weapon that defeats the evil Flash. Mirror Master constructs a duplicate of the weapon, then breaks five of his fellow rogues out of prison.

The Rogues set a trap for the Flash, but Mirror Master's new weapon fails. After they escape, Mirror Master visits the parallel world to learn more about the weapon. He double-crosses the evil Flash, then learns how to use the mirror weapon.

After Mirror Master returns to his own world, he sets another trap for the Flash with the other Rogues. However, as they spring the trap, the evil Flash from the parallel dimension switches places with his counterpart. The Rogues then defeat the evil Flash. The Earth-1 Flash returns home and surprises the Rogues.

After defeating the Rogues and returning them to prison, Flash intends to tell Iris his secret identity. Instead he is surprised to learn that Iris already knows his secret since he talks in his sleep.