S05E21: The Girl With The Red Lightning
Team Flash is on high alert after Cicada II threatens to unleash a dangerous virus that would put all meta-humans at risk.
Previous Episode 
Season 1
Pilot
S1E1 / 07 Oct 2014
Fastest Man Alive
S1E2 / 14 Oct 2014
Things You Can't Outrun
S1E3 / 21 Oct 2014
Going Rogue
S1E4 / 28 Oct 2014
Plastique
S1E5 / 11 Nov 2014
The Flash is Born
S1E6 / 18 Nov 2014
Power Outage
S1E7 / 25 Nov 2014
Flash vs. Arrow (I)
S1E8 / 02 Dec 2014
The Man in the Yellow Suit
S1E9 / 09 Dec 2014
Revenge of the Rogues
S1E10 / 20 Jan 2015
The Sound and the Fury
S1E11 / 27 Jan 2015
Crazy for You
S1E12 / 03 Feb 2015
The Nuclear Man
S1E13 / 10 Feb 2015
Fallout
S1E14 / 17 Feb 2015
Out of Time
S1E15 / 17 Mar 2015
Rogue Time
S1E16 / 24 Mar 2015
Tricksters
S1E17 / 31 Mar 2015
All Star Team Up
S1E18 / 14 Apr 2015
Who Is Harrison Wells?
S1E19 / 21 Apr 2015
The Trap
S1E20 / 28 Apr 2015
Grodd Lives
S1E21 / 05 May 2015
Rogue Air
S1E22 / 12 May 2015
Fast Enough
S1E23 / 19 May 2015
Season 2
The Man Who Saved Central City
S2E1 / 06 Oct 2015
Flash of Two Worlds
S2E2 / 13 Oct 2015
Family of Rogues
S2E3 / 20 Oct 2015
The Fury of Firestorm
S2E4 / 27 Oct 2015
The Darkness and the Light
S2E5 / 03 Nov 2015
Enter Zoom
S2E6 / 10 Nov 2015
Gorilla Warfare
S2E7 / 17 Nov 2015
Legends of Today (I)
S2E8 / 01 Dec 2015
Running to Stand Still
S2E9 / 08 Dec 2015
Potential Energy
S2E10 / 19 Jan 2016
The Reverse-Flash Returns
S2E11 / 26 Jan 2016
Fast Lane
S2E12 / 02 Feb 2016
Welcome to Earth-2
S2E13 / 09 Feb 2016
Escape from Earth-2
S2E14 / 16 Feb 2016
King Shark
S2E15 / 23 Feb 2016
Trajectory
S2E16 / 22 Mar 2016
Flash Back
S2E17 / 29 Mar 2016
Versus Zoom
S2E18 / 19 Apr 2016
Back to Normal
S2E19 / 26 Apr 2016
Rupture
S2E20 / 03 May 2016
The Runaway Dinosaur
S2E21 / 10 May 2016
Invincible
S2E22 / 17 May 2016
The Race of His Life
S2E23 / 24 May 2016
Season 3
Flashpoint
S3E1 / 04 Oct 2016
Paradox
S3E2 / 11 Oct 2016
Magenta
S3E3 / 18 Oct 2016
The New Rogues
S3E4 / 25 Oct 2016
Monster
S3E5 / 01 Nov 2016
Shade
S3E6 / 15 Nov 2016
Killer Frost
S3E7 / 22 Nov 2016
Invasion! (II)
S3E8 / 29 Nov 2016
The Present
S3E9 / 06 Dec 2016
Borrowing Problems from the Future
S3E10 / 24 Jan 2017
Dead or Alive
S3E11 / 31 Jan 2017
Untouchable
S3E12 / 07 Feb 2017
Attack on Gorilla City (1)
S3E13 / 21 Feb 2017
Attack on Central City (2)
S3E14 / 28 Feb 2017
The Wrath of Savitar
S3E15 / 07 Mar 2017
Into the Speed Force
S3E16 / 14 Mar 2017
Duet (II)
S3E17 / 21 Mar 2017
Abra Kadabra
S3E18 / 28 Mar 2017
The Once and Future Flash
S3E19 / 25 Apr 2017
I Know Who You Are
S3E20 / 02 May 2017
Cause and Effect
S3E21 / 09 May 2017
Infantino Street
S3E22 / 16 May 2017
Finish Line
S3E23 / 23 May 2017
Season 4
The Flash Reborn
S4E1 / 10 Oct 2017
Mixed Signals
S4E2 / 17 Oct 2017
Luck Be a Lady
S4E3 / 24 Oct 2017
Elongated Journey Into Night
S4E4 / 31 Oct 2017
Girls Night Out
S4E5 / 07 Nov 2017
When Harry Met Harry...
S4E6 / 14 Nov 2017
Therefore I Am
S4E7 / 21 Nov 2017
Crisis on Earth-X (III)
S4E8 / 28 Nov 2017
Don't Run
S4E9 / 05 Dec 2017
The Trial of The Flash
S4E10 / 16 Jan 2018
The Elongated Knight Rises
S4E11 / 23 Jan 2018
Honey, I Shrunk Team Flash
S4E12 / 30 Jan 2018
True Colors
S4E13 / 06 Feb 2018
Subject 9
S4E14 / 27 Feb 2018
Enter Flashtime
S4E15 / 06 Mar 2018
Run, Iris, Run
S4E16 / 13 Mar 2018
Null and Annoyed
S4E17 / 10 Apr 2018
Lose Yourself
S4E18 / 17 Apr 2018
Fury Rogue
S4E19 / 24 Apr 2018
Therefore She Is
S4E20 / 01 May 2018
Harry and the Harrisons
S4E21 / 08 May 2018
Think Fast
S4E22 / 15 May 2018
We Are The Flash
S4E23 / 22 May 2018
Season 5
Nora
S5E1 / 09 Oct 2018
Blocked
S5E2 / 16 Oct 2018
The Death of Vibe
S5E3 / 23 Oct 2018
News Flash
S5E4 / 30 Oct 2018
All Doll'd Up
S5E5 / 13 Nov 2018
The Icicle Cometh
S5E6 / 20 Nov 2018
O Come, All Ye Thankful
S5E7 / 27 Nov 2018
What's Past Is Prologue
S5E8 / 04 Dec 2018
Elseworlds (I)
S5E9 / 09 Dec 2018
The Flash & The Furious
S5E10 / 15 Jan 2019
Seeing Red
S5E11 / 22 Jan 2019
Memorabilia
S5E12 / 29 Jan 2019
Goldfaced
S5E13 / 05 Feb 2019
Cause and XS
S5E14 / 12 Feb 2019
King Shark vs. Gorilla Grodd
S5E15 / 05 Mar 2019
Failure Is an Orphan
S5E16 / 12 Mar 2019
Time Bomb
S5E17 / 19 Mar 2019
Godspeed
S5E18 / 16 Apr 2019
Snow Pack
S5E19 / 23 Apr 2019
Gone Rogue
S5E20 / 30 Apr 2019
The Girl With The Red Lightning
S5E21 / 07 May 2019
Legacy
S5E22 / 14 May 2019
Season 6
Into The Void
S6E1 / 08 Oct 2019
A Flash of the Lightning
S6E2 / 15 Oct 2019
Dead Man Running
S6E3 / 22 Oct 2019
There Will Be Blood
S6E4 / 29 Oct 2019
Kiss Kiss Breach Breach
S6E5 / 05 Nov 2019
License to Elongate
S6E6 / 19 Nov 2019
The Last Temptation of Barry Allen (1)
S6E7 / 26 Nov 2019
The Last Temptation of Barry Allen (2)
S6E8 / 03 Dec 2019
Crisis on Infinite Earths: Part Three (III)
S6E9 / 10 Dec 2019
Marathon
S6E10 / 04 Feb 2020
Love Is a Battlefield
S6E11 / 11 Feb 2020
A Girl Named Sue
S6E12 / 18 Feb 2020
Grodd Friended Me
S6E13 / 25 Feb 2020
Death of the Speed Force
S6E14 / 10 Mar 2020
The Exorcism of Nash Wells
S6E15 / 17 Mar 2020
So Long and Goodnight
S6E16 / 21 Apr 2020
Liberation
S6E17 / 28 Apr 2020
Pay the Piper
S6E18 / 05 May 2020
Success Is Assured
S6E19 / 12 May 2020
Season 7
All's Wells That Ends Wells
S7E1 / 02 Mar 2021
The Speed of Thought
S7E2 / 09 Mar 2021
Mother
S7E3 / 16 Mar 2021
Central City Strong
S7E4 / 23 Mar 2021
Fear Me
S7E5 / 30 Mar 2021
The One With The Nineties
S7E6 / 06 Apr 2021
Growing Pains
S7E7 / 13 Apr 2021
The People v. Killer Frost
S7E8 / 04 May 2021
Timeless
S7E9 / 11 May 2021
Family Matters (1)
S7E10 / 18 May 2021
Family Matters (2)
S7E11 / 25 May 2021
Good-Bye Vibrations
S7E12 / 08 Jun 2021
Masquerade
S7E13 / 15 Jun 2021
Rayo De Luz
S7E14 / 22 Jun 2021
Enemy at the Gates
S7E15 / 29 Jun 2021
P.O.W.
S7E16 / 06 Jul 2021
Heart of the Matter (1)
S7E17 / 13 Jul 2021
Heart of the Matter (2)
S7E18 / 20 Jul 2021
Season 8
Armageddon (1)
S8E1 / 16 Nov 2021
Armageddon (2)
S8E2 / 23 Nov 2021
Armageddon (3)
S8E3 / 30 Nov 2021
Armageddon (4)
S8E4 / 07 Dec 2021
Armageddon (5)
S8E5 / 14 Dec 2021
Impulsive Excessive Disorder
S8E6 / 09 Mar 2022
Lockdown
S8E7 / 16 Mar 2022
The Fire Next Time
S8E8 / 23 Mar 2022
Phantoms
S8E9 / 30 Mar 2022
Reckless
S8E10 / 06 Apr 2022
Resurrection
S8E11 / 13 Apr 2022
Death Rises
S8E12 / 27 Apr 2022
Death Falls
S8E13 / 04 May 2022
Funeral for a Friend
S8E14 / 11 May 2022
Into the Still Force
S8E15 / 18 May 2022
The Curious Case of Bartholomew Allen
S8E16 / 25 May 2022
Keep It Dark
S8E17 / 08 Jun 2022
The Man in the Yellow Tie
S8E18 / 15 Jun 2022
Negative (1)
S8E19 / 22 Jun 2022
Negative (2)
S8E20 / 29 Jun 2022
Season 9
Wednesday Ever After
S9E1 / 08 Feb 2023
Hear No Evil
S9E2 / 15 Feb 2023
Rogues of War
S9E3 / 22 Feb 2023
Mask of the Red Death (1)
S9E4 / 01 Mar 2023
Mask of the Red Death (2)
S9E5 / 08 Mar 2023
The Good, the Bad and the Lucky
S9E6 / 15 Mar 2023
Wildest Dreams
S9E7 / 29 Mar 2023
Partners in Time
S9E8 / 05 Apr 2023
It's My Party and I'll Die If I Want To
S9E9 / 26 Apr 2023
A New World (1)
S9E10 / 03 May 2023
A New World (2)
S9E11 / 10 May 2023
A New World (3)
S9E12 / 17 May 2023
A New World (4)
S9E13 / 24 May 2023
Grant Gustin
Barry Allen / The Flash
Candice Patton
Iris West-Allen
Danielle Panabaker
Khione
Danielle Nicolet
Cecile Horton
Kayla Compton
Allegra Garcia
Brandon McKnight
Chester P. Runk
