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Watch The Flash - Season 5 Episode 21 Online!:

Team Flash is on high alert after Cicada II threatens to unleash a dangerous virus that would put all meta-humans at risk.

Writing:
  • Geoff Johns
  • Andrew Kreisberg
  • Greg Berlanti

Stars:
Release Date: 2014-10-07
Seasons: 1 2 3 4 5 6 7 8 9
Metacritic: 6.8/10
TMDb: 7.8/10
  • Country: US
  • Language: English

Other episodes for this season

Nora
Episode 1 - Nora
Blocked
Episode 2 - Blocked
The Death of Vibe
Episode 3 - The Death of Vibe
News Flash
Episode 4 - News Flash
All Doll'd Up
Episode 5 - All Doll'd Up
The Icicle Cometh
Episode 6 - The Icicle Cometh
O Come, All Ye Thankful
Episode 7 - O Come, All Ye Thankful
What's Past Is Prologue
Episode 8 - What's Past Is Prologue
Elseworlds (I)
Episode 9 - Elseworlds (I)
The Flash & The Furious
Episode 10 - The Flash & The Furious
Seeing Red
Episode 11 - Seeing Red
Memorabilia
Episode 12 - Memorabilia
Goldfaced
Episode 13 - Goldfaced
Cause and XS
Episode 14 - Cause and XS
King Shark vs. Gorilla Grodd
Episode 15 - King Shark vs. Gorilla Gr...
Failure Is an Orphan
Episode 16 - Failure Is an Orphan
Time Bomb
Episode 17 - Time Bomb
Godspeed
Episode 18 - Godspeed
Snow Pack
Episode 19 - Snow Pack
Gone Rogue
Episode 20 - Gone Rogue
The Girl With The Red Lightning
Episode 21 - The Girl With The Red Lightning
Legacy
Episode 22 - Legacy