The Flash: Season 4
The Flash Season 4 continues the overarching saga across 23 episodes. The series follows the adventures of Barry Allen, a crime scene investigator who is struck by lightning and gains super-human speed, which he uses to solve crimes. Created by Greg Berlanti, Geoff Johns, and Andrew Kreisberg, the show stars Grant Gustin as Barry Allen, alongside Candice Patton, Danielle Panabaker, and Jesse. The program is an Americ
Season 4 Lore Primer
Key plot threads, lore context, and character stakes you need to remember before diving into this season.
- Barry Allen is a crime scene investigator who awakens from a nine-month coma after being struck by lightning.
- A freak accident grants Barry Allen super-human speed, which he uses to solve crimes.
- The series follows Barry Allen, portrayed by Grant Gustin, and his superhuman abilities.
- The show is an action television series based on DC Comics created by Greg Berlanti, Geoff Johns, and Andrew Kreisberg.
Season overview
The Flash Season 4 continues the overarching saga across 23 episodes. The series follows the adventures of Barry Allen, a crime scene investigator who is struck by lightning and gains super-human speed, which he uses to solve crimes. Created by Greg Berlanti, Geoff Johns, and Andrew Kreisberg, the show stars Grant Gustin as Barry Allen, alongside Candice Patton, Danielle Panabaker, and Jesse. The program is an American action television series based on DC Comics characters and broadcast on The CW.
Episode Guide
Season 4 Progress Shield
The Flash Reborn
Oct 10, 2017 · 42 min
With Barry in the speed force, Iris, Kid Flash, Joe and Vibe have taken over protecting Central City. However, when a powerful armored villain threatens to level the city if The Fl
Mixed Signals
Oct 17, 2017 · 42 min
Barry has his hands full when he takes on a dangerous meta who can control technology, while also confronting an obstacle in his personal life: the ramifications of abandoning Iris
Luck Be a Lady
Oct 24, 2017 · 42 min
Barry and the team are hit by a string of bad luck and realize it is the handiwork of a new meta, Becky nicknamed Hazard, who has the ability to give others bad luck, while cashing
Elongated Journey Into Night
Oct 31, 2017 · 41 min
Cisco is shocked when Gypsy's father, Breacher, shows up on Earth-1. Breacher takes an immediate disliking to Cisco and decides to hunt him. Meanwhile, Barry runs into his old neme
Girls Night Out
Nov 7, 2017 · 41 min
Having received an ominous threat from her old boss, Amunet, Caitlin fears that her past time as Killer Frost may be back to haunt her. Felicity comes to Central City to help the g
When Harry Met Harry...
Nov 14, 2017 · 42 min
When collectors of Native American artifacts are attacked by a meta named Mina Chayton who can bring inanimate objects to life, Barry turns to a surprising ally for help. Determine
Therefore I Am
Nov 21, 2017 · 41 min
Barry comes face to face with DeVoe. Devoe's past is revealed through flashbacks. Meanwhile, Iris puts the final touches on the wedding, which is a week away.
Crisis on Earth-X (III)
Nov 28, 2017 · 42 min
Barry and Iris's wedding brings the gang together, but things go awry when villains from Earth-X attack the ceremony. All of the superheroes band together with help from their supe
Don't Run
Dec 5, 2017 · 42 min
Amunet kidnaps Caitlin and puts meta-dampener handcuffs on her to keep her from turning into Killer Frost. Amunet tells Caitlin she needs her to perform a tricky medical task and i
The Trial of The Flash
Jan 16, 2018 · 42 min
As Barry’s trial for the murder of Clifford DeVoe begins, Iris and Joe must decide how far they are willing to go to keep Barry out of prison.
The Elongated Knight Rises
Jan 23, 2018 · 42 min
When a familiar villain returns to terrorize Central City, Ralph must rise up to defend the innocent while Barry is detained by his trial. Meanwhile, Barry searches for the strengt
Honey, I Shrunk Team Flash
Jan 30, 2018 · 42 min
A meta who can shrink anything he touches battles Team Flash. Cisco and Ralph get caught in his crossfire and are shrunk to miniature versions of themselves. Cecile realizes her pr
True Colors
Feb 6, 2018 · 42 min
After hearing that Amunet has struck a deal to buy all of the metahumans in Iron Heights, Barry must decide if he should expose his powers in order to save his cellmates. After a v
Subject 9
Feb 27, 2018 · 42 min
Barry meets a powerful woman whose abilities could help him in his battle with DeVoe. Meanwhile, after learning that DeVoe is targeting everyone who was on the bus, Ralph decides h
Enter Flashtime
Mar 6, 2018 · 41 min
When a nuclear bomb detonates in downtown Central City, Barry, Jesse Quick and Jay Garrick slow down time by entering Flashtime. As everyone in the city is frozen, the three speeds
Run, Iris, Run
Mar 13, 2018 · 41 min
Team Flash confront a new bus meta, Matthew aka Melting Pot. He has the ability to swap people’s DNA, so during a battle with Team Flash, he transfers Barry’s super speed to Iris.
Null and Annoyed
Apr 10, 2018 · 42 min
Barry and Ralph take different approaches to finding the remaining bus metas before DeVoe gets to them. However, Ralph's cavalier attitude frustrates Barry and the two clash over w
Lose Yourself
Apr 17, 2018 · 42 min
When Barry and Team Flash find a way to enter The Thinker’s lair, Ralph considers crossing a dangerous line to defeat DeVoe. Meanwhile, Joe is concerned by Harry’s recent behavior.
Fury Rogue
Apr 24, 2018 · 42 min
When Barry needs help transporting a dangerous meta, he calls on a new friend for help - Leo Snart AKA Citizen Cold. Meanwhile, Cisco becomes suspicious of Harry.
Therefore She Is
May 1, 2018 · 42 min
Barry and Team Flash team up with Gypsy to try to thwart Thinker's plan. Meanwhile, Cisco and Gypsy have a heart to heart talk about their relationship.
Harry and the Harrisons
May 8, 2018 · 42 min
With DeVoe's Enlightenment device nearly complete, in order to disable it The Flash and his team must put their faith in an unlikely ally – Amunet Black. Meanwhile, Harry hits an a
Think Fast
May 15, 2018 · 41 min
When DeVoe assaults an A.R.G.U.S. facility to complete his Enlightenment Machine, Barry realizes the only way he can stop him is if he allows Cisco and Caitlin to accompany him int
We Are The Flash
May 22, 2018 · 42 min
Team Flash gets help from a surprising ally in their battle against DeVoe.