The Flash was renewed for a fourth season by The CW on January 8, 2017.[1] It premiered on October 10, 2017.


Main cast

Recurring cast


"Running up against an evil time remnant version of yourself is something no one should ever have to do, but that’s exactly what faced Barry Allen (aka The Flash) as he fought to 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 wreak havoc on Central City, forcing Barry to sacrifice himself for the greater good."

"With The Fastest Man Alive now trapped inside an extra-dimensional energy, and unknown dangers lurking in the shadows, it will be up to Team Flash to free Barry from his own personal Hell."[5]

Confirmed plot points

Confirmed new characters

  • Neil Borman/Fallout: A blue collar, likable, good guy just trying to make ends meet, but unbeknownst to him, he has radiation emitting meta-human powers that could cause the whole city to suffer a nuclear, catastrophic explosion. Neil is unaware that he is hurting people.[4]


# 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 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.
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 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 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.
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 Cisco and decides to 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 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.
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 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.
7 "Therefore I Am" David McWhirter Eric Wallace & Thomas Pound November 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.
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 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.
9 "Don't Run" Stefan Pleszczynski Sam Chalsen & Judalina Neira December 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.
10 "The Trial of The Flash"[10] TBA TBA TBA January 16, 2018[11]
11 "The Elongated Knight Rises"[12] TBA TBA TBA TBA
12 "Honey, I Shrunk Team Flash"[13] TBA TBA TBA TBA
13 "True Colors"[14] TBA TBA TBA TBA
15 "Enter Flashtime"[15] TBA TBA TBA TBA


Title cards

Promotional images



  1. The CW renews seven series including 'Arrow,' 'The Flash,' 'Supernatural' and 'Crazy Ex-Girlfriend' - LA Times
  2. The Flash Adds Law & Order Alum In Recurring Role - ScreenRant
  3. 3.0 3.1 ‘The Flash’ Spoilers: Is Anne Dudek Returning For Season 4? -
  4. 4.0 4.1 4.2 EXCLUSIVE: Two New Metahumans are Joining "THE FLASH" -
  5. The Flash Season 4 SDCC Panel Info Released -
  6. ‘The Flash’: Andrew Kreisberg & Danny Trejo on Breacher, The Thinker, and the Crossover - Collider
  7. Wentworth Miller to Exit CW's 'Legends of Tomorrow' and 'The Flash' - Hollywood Repoter
  8. SEASON 4: It’s Ralph Dibny’s Elongated Man Versus Baby Trickster in an Upcoming THE FLASH - YVRShoots
  9. The Flash Season 4 Is About 'The Fastest Man Alive vs. Fastest Mind Alive' -
  10. 'The Flash' Midseason Premiere Gets a Title -
  11. ‘Black Lightning’ Gets Premiere Date, Post-‘Flash’ Time Slot By the CW - Deadline
  12. The Flash - Episode 4.11 - Title Revealed - Spoiler TV
  13. The Flash - Episode 4.12 - Title Revealed - Spoiler TV
  14. The Flash - Episode 4.13 - Title Revealed - Spoiler TV
  15. The Flash - Episode 4.15 - Title Revealed - Spoiler TV