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The Best Episodes of The Flash Season 4

Every episode of The Flash Season 4 ranked from best to worst. Discover the Best Episodes of The Flash Season 4!

After being struck by lightning, CSI investigator Barry Allen awakens from a nine-month coma to discover he has been granted the gift of super...
Genres:DramaSci-Fi & Fantasy
Network:The CW

Season 4 Ratings Summary

"The Flash Reborn" is the best rated episode of "The Flash" season 4. It scored 7.4/10 based on 4570 votes. Directed by Glen Winter and written by N/A, it aired on 10/10/2017. This episode is rated 0.2 points higher than the second-best, "Mixed Signals".

  • The Flash Reborn
    7.4/104,570 votes

    #1 - The Flash Reborn

    Season 4 Episode 1 - Aired 10/10/2017

    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 Flash doesn't appear, Cisco makes a risky decision to break Barry out of the speed force. However, the Barry that comes out isn't the same Barry that went in.

    Director: Glen Winter

    Writer: N/A

  • Mixed Signals
    7.2/103,685 votes

    #2 - Mixed Signals

    Season 4 Episode 2 - Aired 10/17/2017

    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 for six months to balance the Speed Force. Meanwhile, Gypsy breaches in for a hot date with Cisco, but she gets annoyed when his work keeps them apart.

    Director: Alexandra La Roche

    Writer: Jonathan Butler, Gabriel Garza

  • Luck Be a Lady
    7.3/103,515 votes

    #3 - Luck Be a Lady

    Season 4 Episode 3 - Aired 10/24/2017

    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 in the benefits for herself. Meanwhile, Harry Wells returns to Earth-1 to give Wally a message from Jesse.

    Director: Armen V. Kevorkian

    Writer: Sam Chalsen, Judalina Neira

  • Elongated Journey Into Night
    8.2/103,654 votes

    #4 - Elongated Journey Into Night

    Season 4 Episode 4 - Aired 10/31/2017

    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 nemesis, Ralph Dibny.

    Director: Tom Cavanagh

    Writer: Sterling Gates, Thomas Pound

  • Girls Night Out
    5.3/105,104 votes

    #5 - Girls Night Out

    Season 4 Episode 5 - Aired 11/7/2017

    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 girls celebrate Iris's bachelorette party, while Cisco, Joe and the guys take Barry out for a night on the town.

    Director: Laura Belsey

    Writer: Lauren Certo, Kristen Kim

  • When Harry Met Harry...
    7.1/103,281 votes

    #6 - When Harry Met Harry...

    Season 4 Episode 6 - Aired 11/14/2017

    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. Determined to crack the identity of The Thinker, Harry enlists Cisco's help to summon the ultimate think tank: "The Council of Wells'," a roundtable of the brightest Harrison Wells' from various Earths.

    Director: Brent Crowell

    Writer: Jonathan Butler, Gabriel Garza

  • Therefore I Am
    8.5/103,707 votes

    #7 - Therefore I Am

    Season 4 Episode 7 - Aired 11/21/2017

    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.

    Director: David McWhirter

    Writer: Thomas Pound, Eric Wallace

  • Crisis on Earth-X (III)
    8.6/104,400 votes

    #8 - Crisis on Earth-X (III)

    Season 4 Episode 8 - Aired 11/28/2017

    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 super friends like Citizen Cold, The Ray, Felicity Smoak, Iris West and Alex Danvers to take on their most formidable villains yet. Earth's mightiest heroes - Green Arrow, Supergirl, The Flash and White Canary - lead their teams into battle to save the world. The crossover starts on Supergirl S03E08 Crisis on Earth X (I) and Arrow S06E08 Crisis on Earth X (II). It continues on DC's Legends of Tomorrow S03E08 Crisis on Earth X (IV).

    Director: Dermott Downs

    Writer: N/A

  • Don't Run
    8.4/103,586 votes

    #9 - Don't Run

    Season 4 Episode 9 - Aired 12/5/2017

    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 if Caitlin fails, Amunet will kill her. Meanwhile, The Thinker traps The Flash in a speedster-proof prison. With the clock ticking, The Team doesn't have the time or resources to track both Caitlin and Barry so Iris is forced to choose who to save.

    Director: Stefan Pleszczynski

    Writer: Sam Chalsen, Judalina Neira

  • The Trial of The Flash
    8.1/103,436 votes

    #10 - The Trial of The Flash

    Season 4 Episode 10 - Aired 1/16/2018

    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.

    Director: Phil Chipera

    Writer: Lauren Certo, Kristen Kim

  • The Elongated Knight Rises
    7.5/103,068 votes

    #11 - The Elongated Knight Rises

    Season 4 Episode 11 - Aired 1/23/2018

    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 strength to keep his optimism alive in the face of his new circumstances.

    Director: Alexandra La Roche

    Writer: Sterling Gates, Thomas Pound

  • Honey, I Shrunk Team Flash
    7.7/102,994 votes

    #12 - Honey, I Shrunk Team Flash

    Season 4 Episode 12 - Aired 1/30/2018

    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 pregnancy has caused her to have temporary powers and discovers she can hear other people’s thoughts, which unnerves Joe. Meanwhile, Barry meets someone with a mysterious connection to Henry Allen.

    Director: Chris Peppe

    Writer: Sam Chalsen, Judalina Neira

  • True Colors
    7.9/103,009 votes

    #13 - True Colors

    Season 4 Episode 13 - Aired 2/6/2018

    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 visit from an old friend, Ralph is reminded of his shady past and wonders if he’s really a changed man.

    Director: Tara Nicole Weyr

    Writer: Jonathan Butler, Gabriel Garza

  • Subject 9
    7.2/102,878 votes

    #14 - Subject 9

    Season 4 Episode 14 - Aired 2/27/2018

    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 he doesn't want to be a hero anymore, his only concern is staying alive. Harry offers to help Joe.

    Director: Ralph Hemecker

    Writer: Mike Alber, Gabe Snyder

  • Enter Flashtime
    8.9/104,659 votes

    #15 - Enter Flashtime

    Season 4 Episode 15 - Aired 3/6/2018

    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 speedsters push themselves to the breaking point to save the city and everyone in it.

    Director: Gregory Smith

    Writer: Todd Helbing, Sterling Gates

  • Run, Iris, Run
    5.5/104,755 votes

    #16 - Run, Iris, Run

    Season 4 Episode 16 - Aired 3/13/2018

    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. Now, with a new threat unleashed on Central City, Barry must act as the team leader while Iris takes on the mantle of superhero speedster in order to defeat their new foe.

    Director: Harry Jierjian

    Writer: Eric Wallace

  • Null and Annoyed
    6.9/102,839 votes

    #17 - Null and Annoyed

    Season 4 Episode 17 - Aired 4/10/2018

    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 what it means to be a hero. Meanwhile, Breacher returns to ask Cisco for a favor.

    Director: Kevin Smith

    Writer: Lauren Certo, Kristen Kim

  • Lose Yourself
    8.0/102,995 votes

    #18 - Lose Yourself

    Season 4 Episode 18 - Aired 4/17/2018

    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.

    Director: Hanelle M. Culpepper

    Writer: Jonathan Butler, Gabriel Garza

  • Fury Rogue
    7.4/102,681 votes

    #19 - Fury Rogue

    Season 4 Episode 19 - Aired 4/24/2018

    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.

    Director: Rachel Talalay

    Writer: Joshua V. Gilbert, Jeff Hersh

  • Therefore She Is
    7.4/102,608 votes

    #20 - Therefore She Is

    Season 4 Episode 20 - Aired 5/1/2018

    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.

    Director: Rob J. Greenlea

    Writer: Sterling Gates, Thomas Pound

  • Harry and the Harrisons
    6.5/102,747 votes

    #21 - Harry and the Harrisons

    Season 4 Episode 21 - Aired 5/8/2018

    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 all-time low when the "Council of Wells" kicks him out but then Cisco introduces him to the "Council of Harrisons."

    Director: Kevin Mock

    Writer: Lauren Certo, Judalina Neira

  • Think Fast
    7.8/102,713 votes

    #22 - Think Fast

    Season 4 Episode 22 - Aired 5/15/2018

    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 into the facility. Still shaken by Ralph’s death, Barry isn’t sure he wants to risk any more of his friends’ lives and considers taking on DeVoe solo.

    Director: Viet Nguyen

    Writer: Sam Chalsen, Kristen Kim

  • We Are The Flash
    7.7/103,180 votes

    #23 - We Are The Flash

    Season 4 Episode 23 - Aired 5/22/2018

    Team Flash gets help from a surprising ally in their battle against DeVoe.

    Director: David McWhirter

    Writer: Todd Helbing, Eric Wallace