xem the flash season 4

Series overview
Season 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9
"You may be the fastest man alive, Allen. I'm the fastest mind."
"So this is how we begin whatever twisted game you have planned."
"No, Mr. Allen. You've already lost and never even realized it.
—Clifford DeVoe and Barry Allen[src]

The fourth season of The Flash​​​ premiered on October 10, 2017, on The CW and concluded on May 22, 2018. The season consisted of 23 episodes.


Running up against an evil time remnant version of yourself is something no one should ever have to tát vì thế, but that’s exactly what faced Barry Allen (aka The Flash) as he fought to tát save the life of fiancée Iris West from the God of Speed known as Savitar.

Barry’s victory was short-lived, however, as an unbalanced Speed Force began to tát wreak havoc on Central City, forcing Barry to tát sacrifice himself for the greater good.

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With The Fastest Man Alive now trapped inside an extra-dimensional energy, and unknown dangers lurking in the shadows, it will be up to tát Team Flash to tát không tính phí Barry from his own personal Hell.[src]


Main cast

  • Grant Gustin as Barry Allen/The Flash
  • Candice Patton as Iris West-Allen
  • Danielle Panabaker as Dr. Caitlin Snow/Killer Frost
  • Carlos Valdes as Cisco Ramon/Vibe
  • Keiynan Lonsdale as Wally West/Kid Flash
  • Neil Sandilands as Professor Clifford DeVoe/The Thinker
  • Tom Cavanagh as Dr. Harrison "Harry" Wells, Dr. Harrison Wolfgang Wells, H. Lothario Wells, Wells 2.0, Wells the Grey, Professor Eobard Thawne/Reverse-Flash, Sonny Wells, and H.P. Wells
  • Jesse L. Martin as Detective Joe West

Recurring cast

  • Danielle Nicolet as District Attorney Cecile Horton
  • Mark Sweatman as Matthew Norvock
  • Kim Engelbrecht as Dr. Marlize DeVoe
  • Dominic Burgess as Ramsey Deacon/Kilg%re
  • Patrick Sabongui as Captain David Singh
  • Jessica Camacho as Cynthia/Gypsy
  • Donna Pescow as Dr. Sharon Finkel
  • Richard Brooks as Warden Gregory Wolfe
  • Sugar Lyn Beard as Becky Sharpe/Hazard and Professor Clifford DeVoe/The Thinker
  • Hartley Sawyer as Ralph Dibny/Elongated Man and Professor Clifford DeVoe
  • Katee Sackhoff as Leslie Jocoy/Amunet Black
  • Chelsea Kurtz as Mina Chaytan/Black Bison
  • Kendrick Sampson as Dominic Lanse/Brainstorm and Professor Clifford DeVoe/The Thinker
  • Ryan Alexander McDonald as Neil Borman/Fallout
  • Jessica Parker Kennedy as Nora West-Allen/XS
  • Miranda MacDougall as Izzy Bowin/The Fiddler and Professor Clifford DeVoe/The Thinker
  • Matt Afonso as Weeper
  • Morena Baccarin as Gideon (voice)


# Episode name Directed by Story by Teleplay by Original airdate
1 "The Flash Reborn" Glen Winter Andrew Kreisberg Todd Helbing & Eric Wallace October 10, 2017
With Barry in the tốc độ force, Iris, Kid Flash, Joe and Vibe have taken over protecting Central City. However, when a powerful armored villain threatens to tát level the đô thị if The Flash doesn't appear, Cisco makes a risky decision to tát break Barry out of the tốc độ force. However, the Barry that comes out isn't the same Barry that went in.
2 "Mixed Signals" Alexandra La Roche Jonathan Butler & Gabriel Garza October 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 tát balance the Speed Force. Meanwhile, Gypsy breaches in for a hot date with Cisco, but she gets annoyed when his work keeps them apart.
3 "Luck Be a Lady" Armen V. Kevorkian Sam Chalsen & Judalina Neira October 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 tát give others bad luck, while cashing in the benefits for herself. Meanwhile, Harry Wells returns to tát Earth-1 to tát give Wally a message from Jesse.
4 "Elongated Journey Into Night" Tom Cavanagh Sterling Gates & Thomas Pound October 31, 2017
Cisco is shocked when Gypsy's father, Breacher, shows up on Earth-1. Breacher takes an immediate disliking to tát Cisco and decides to tát hunt him. Meanwhile, Barry runs into his old nemesis, Ralph Dibny.
5 "Girls Night Out" Laura Belsey Lauren Certo & Kristen Kim November 7, 2017
Having received an ominous threat from her old quấn, Amunet, Caitlin fears that her past time as Killer Frost may be back to tát haunt her. Felicity comes to tát Central City to tát help the girls celebrate Iris's bachelorette các buổi tiệc nhỏ, while Cisco, Joe and the guys take Barry out for a night on the town.
6 "When Harry Met Harry..." Brent Crowell Jonathan Butler & Gabriel Garza November 14, 2017
When collectors of Native American artifacts are attacked by a meta named Mina Chayton who can bring inanimate objects to tát life, Barry turns to tát a surprising ally for help. Determined to tát crack the identity of The Thinker, Harry enlists Cisco’s help to tát summon the ultimate think tank; "The Council of Wells", a roundtable of the brightest Harrison Wells’ from various Earths.
7 "Therefore I Am" David McWhirter Eric Wallace & Thomas Pound November 21, 2017
Barry comes face to tát face with DeVoe. DeVoe's past is revealed through flashbacks. Meanwhile, Iris puts the final touches on the wedding, which is a week away.
8 "Crisis on Earth-X, Part 3" Dermott Downs Andrew Kreisberg & Marc Guggenheim Todd Helbing November 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 lượt thích Citizen Cold, The Ray, Felicity Smoak, Iris West and Alex Danvers to tát 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 tát save the world.
9 "Don't Run" Stefan Pleszczynski Sam Chalsen & Judalina Neira December 5, 2017
Amunet kidnaps Caitlin and puts meta-dampener handcuffs on her to tát keep her from turning into Killer Frost. Amunet tells Caitlin she needs her to tát 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 tát track both Caitlin and Barry sánh Iris is forced to tát choose who to tát save.
10 "The Trial of The Flash" Philip Chipera Lauren Certo & Kristen Kim January 16, 2018
As Barry's trial for the murder of Clifford DeVoe begins, Iris and Joe must decide how far they are willing to tát go to tát keep Barry out of prison.
11 "The Elongated Knight Rises" Alexandra La Roche Sterling Gates & Thomas Pound January 23, 2018
When a familiar villain returns to tát terrorize Central City, Ralph must rise up to tát defend the innocent while Barry is detained by his trial. Meanwhile, Barry searches for the strength to tát keep his optimism alive in the face of his new circumstances.
12 "Honey, I Shrunk Team Flash" Chris Peppe Sam Chalsen & Judalina Neira January 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 tát miniature versions of themselves. Cecile realizes her pregnancy has caused her to tát have temporary powers and discovers she can hear other people's thoughts, which unnerves Joe. Meanwhile, Barry meets someone with a mysterious connection to tát Henry Allen.
13 "True Colors" Tara Nicole Weyr Jonathan Butler & Gabriel Garza February 6, 2018
After hearing that Amunet has struck a khuyễn mãi giảm giá to tát buy all of the metahumans in Iron Heights, Barry must decide if he should expose his powers in order to tát 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.
14 "Subject 9" Ralph Hemecker Mike Alber & Gabe Snyder February 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 tát be a hero anymore, his only concern is staying alive. Harry offers to tát help Joe.
15 "Enter Flashtime" Gregory Smith Todd Helbing & Sterling Gates March 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 đô thị is frozen, the three speedsters push themselves to tát the breaking point to tát save the đô thị and everyone in it.
16 "Run, Iris, Run" Harry Jierjian Eric Wallace March 13, 2018
Team Flash confronts a new bus meta, Matthew AKA Melting Point, with the ability to tát swap people's DNA. During a battle with Team Flash, Matthew transfers Barry's super tốc độ to tát 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 tát defeat their new foe.
17 "Null and Annoyed" Kevin Smith Lauren Certo & Kristen Kim April 10, 2018
Barry and Ralph take different approaches to tát finding the remaining bus metas before DeVoe gets to tát them. However, Ralph's cavalier attitude frustrates Barry and the two clash over what it means to tát be a hero. Meanwhile, Breacher returns to tát ask Cisco for a favor.
18 "Lose Yourself" Hanelle Culpepper Jonathan Butler & Gabriel Garza April 17, 2018
When Barry and Team Flash find a way to tát enter the Thinker's lair, Ralph considers crossing a dangerous line to tát defeat DeVoe. Meanwhile, Joe is concerned by Harry’s recent behavior.
19 "Fury Rogue" Rachel Talalay Joshua V. Gilbert & Jeff Hersh April 24, 2018
When Barry needs help transporting a dangerous meta, he calls on a new friend for help - Citizen Cold; Cisco becomes suspicious of Harry.
20 "Therefore She Is" Rob J. Greenlea Sterling Gates & Thomas Pound May 1, 2018
Barry and Team Flash team up with Gypsy to tát try to tát thwart the Thinker's plan. Meanwhile, Cisco and Gypsy have a heart to tát heart talk about their relationship.
21 "Harry and the Harrisons" Kevin Mock Judalina Neira & Lauren Certo May 8, 2018
With DeVoe's Enlightenment device nearly complete, in order to tát 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 tát the "Council of Harrisons".
22 "Think Fast" Viet Nguyen Sam Chalsen & Kristen Kim May 15, 2018
When DeVoe assaults an A.R.G.U.S. facility to tát complete his Enlightenment Machine, Barry realizes the only way he can stop him is if he allows Cisco and Caitlin to tát accompany him into the facility. Still shaken by Ralph's death, Barry isn't sure he wants to tát risk any more of his friends' lives and considers taking on DeVoe solo.
23 "We Are The Flash" David McWhirter Todd Helbing & Eric Wallace May 22, 2018
Team Flash gets help from a surprising ally in their battle against DeVoe.


  • This was the first season of The Flash:
    • Where Robbie Amell (Ronnie Raymond/Firestorm), Rick Cosnett (Eddie Thawne), Michelle Harrison (Nora Allen), Matt Letscher (Professor Eobard Thawne/Reverse-Flash), Wentworth Miller (Leonard Snart/Captain Cold), Dominic Purcell (Mick Rory/Heat Wave), Mark Hamill (The Trickster), and John Wesley Shipp (Henry Allen) didn't reprise their respective roles.
      • However, Miller portrayed Leonard Snart's Earth-X doppelgänger and Shipp reprised his role as Jay Garrick/The Flash in "Enter Flashtime".
    • Where Grodd was not featured since his previous appearance in "Attack on Central City".
    • Where King Shark was not featured since his previous appearance in "Infantino Street".
      • Though King Shark did make a cameo in Supergirl episode, "Crisis on Earth-X, Part 1".
    • To not feature Jesse L. Martin (Joe West) in every episode.
    • To have a main antagonist that wasn't a speedster.
    • To not feature time travel.
  • This is the only season to tát feature Neil Sandilands as a series regular.
  • This is the last season of The Flash:
    • To feature Keiynan Lonsdale as a series regular.
      • Lonsdale was credited in the first three episodes and episode 7, in addition to tát being credited as a special guest star in "We Are The Flash".
    • To have 23 episodes; future seasons would have fewer episodes.
    • To feature Andrew Kreisberg as co-showrunner until he was fired in late 2017 amidst the sexual harassment allegations, with Greg Berlanti stepping in to tát help out Todd Helbing finish the rest of the fourth season.

Home truyền thông media release

Main article: The Flash: The Complete Fourth Season

A boxset of the fourth season, titled The Flash: The Complete Fourth Season, was released on DVD and Blu-ray on August 28, 2018. It contains additional features, deleted scenes, a gag reel and the panels from San Diego Comic-Con International 2017.


Title cards

Promotional images



The Flash season 4
"The Flash Reborn" "Mixed Signals" "Luck Be a Lady" "Elongated Journey Into Night" "Girls Night Out" "When Harry Met Harry..." "Therefore I Am" "Crisis on Earth-X, Part 3" "Don't Run" "The Trial of The Flash" "The Elongated Knight Rises" "Honey, I Shrunk Team Flash" "True Colors" "Subject 9" "Enter Flashtime" "Run, Iris, Run" "Null and Annoyed" "Lose Yourself" "Fury Rogue" "Therefore She Is" "Harry and the Harrisons" "Think Fast" "We Are The Flash"