The Flash Season 4 Episode 23 Trailer and Details

The Flash Season 4 is racing to is season finale! We've got all the details you need!

The Flash Season 4 News

The Flash Season 4 is here, so don’t worry about that. The show’s third season was a marked improvement over the strange detours of season two, and this year has a lighter tone all around.

You can read our review of the most recent episode here.

The Flash Season 4 Episode 23 is called “We Are The Flash” and it airs on May 22. 

Here’s the official synopsis:

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

Well, that’s certainly cryptic.

Check out the trailer…

The Flash Season 4 Episodes

Hit the blue titles to go to the full reviews!

The Flash Season 4 Episode 1: The Flash Reborn

With Barry (Grant Gustin) in the speed force, Iris (Candice Patton), Kid Flash (Keiynan Lonsdale), Joe (Jesse L. Martin) and Vibe (Carlos Valdes) 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.

air date: 10/10/2017

The Flash Season 4 Episode 2: Mixed Signals

Barry (Grant Gustin) has his hands full when he takes on a dangerous meta (guest star Dominic Burgess) who can control technology, while also confronting an obstacle in his personal life:  the ramifications of abandoning Iris (Candice Patton) for six months to balance the Speed Force. Meanwhile, Gypsy (guest star Jessica Camacho) breaches in for a hot date with Cisco (Carlos Valdes), but she gets annoyed when his work keeps them apart.

air date: 10/17/2017

The Flash Season 4 Episode 3: Luck Be a Lady

Barry (Grant Gustin) and the team are hit by a string of bad luck and realize it is the handiwork of a new meta, Becky (guest star Sugar-Lyn Beard) nicknamed Hazard, who has the ability to give others bad luck, while cashing in the benefits for herself.  Meanwhile, Harry Wells (Tom Cavanagh) returns to Earth-1 to give Wally (Keiynan Lonsdale) a message from Jesse.

air date: 10/24/2017

The Flash Season 4 Episode 4: Elongated Journey Into the Night

Cisco (Carlos Valdes) is shocked when Gypsy’s (guest star Jessica Camacho) father, Breacher (guest star Danny Trejo), shows up on Earth-1. Breacher takes an immediate disliking to Cisco and decides to hunt him. Meanwhile, Barry (Grant Gustin) runs into his old nemesis, Ralph Dibny (guest star Hartley Sawyer).

Tom Cavanagh will direct this episode.

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air date: 10/31/17

The Flash Season 4 Episode 5: Girls Night Out

Having received an ominous threat from her old boss, Amunet (guest star Katee Sackhoff), Caitlin (Danielle Panabaker) fears that her past time as Killer Frost may be back to haunt her.  Felicity (guest star Emily Bett Rickards) comes to Central City to help the girls celebrate Iris’s (Candice Patton) bachelorette party, while Cisco (Carlos Valdes), Joe (Jesse L. Martin) and the guys take Barry out for a night on the town.

air date: 11/7/17

The Flash Season 4 Episode 6: When Harry Met Harry

When collectors of Native American artifacts are attacked by a meta named Mina Chayton (guest star Chelsea Kurtz) who can bring inanimate objects to life, Barry (Grant Gustin) turns to a surprising ally for help.  Determined to crack the identity of The Thinker, Harry (Tom Cavanagh) enlists Cisco’s (Carlos Valdes) help to summon the ultimate think tank: “The Council of Wells’,” a roundtable of the brightest Harrison Wells’ from various Earths.

air date: 11/14/17

The Flash Season 4 Episode 7: Therefore I Am

Barry (Grant Gustin) comes face to face with DeVoe (guest star Neil Sandilands). Devoe’s past is revealed through flashbacks. Meanwhile, Iris (Candice Patton) puts the final touches on the wedding, which is a week away.

air date: 11/21/17

The Flash Season 4 Episode 8: Crisis on Earth-X

Barry (Grant Gustin) and Iris’s (Candice Patton) 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 (guest star Wentworth Miller), The Ray (guest star Russell Tovey), Felicity Smoak (guest star Emily Bett Rickards), Iris West and Alex Danvers (guest star Chyler Leigh) to take on their most formidable villains yet.  Earth’s mightiest heroes – Green Arrow (guest star Stephen Amell), Supergirl (guest star Melissa Benoist), The Flash (Grant Gustin) and White Canary (guest star Caity Lotz) – lead their teams into battle to save the world.

air date: 11/28/17

The Flash Season 4 Episode 9: Don’t Run

Amunet (guest star Katie Sackhoff) kidnaps Caitlin (Danielle Panabaker) 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 (guest star Neil Sandilands) traps The Flash (Grant Gustin) 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 (Candice Patton) is forced to choose who to save.

air date: 12/5/17

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The Flash Season 4 Episode 10: The Trial of the Flash

As Barry’s (Grant Gustin) trial for the murder of Clifford DeVoe begins, Iris (Candice Patton) and Joe (Jesse L. Martin) must decide how far they are willing to go to keep Barry out of prison.

air date: 1/16/18

The Flash Season 4 Episode 11: The Elongated Knight Rises

When a familiar villain returns to terrorize Central City, Ralph (guest star Hartley Sawyer) must rise up to defend the innocent while Barry (Grant Gustin) is detained by his trial.  Meanwhile, Barry searches for the strength to keep his optimism alive in the face of his new circumstances.

air date: 1/23/18

The Flash Season 4 Episode 12: Honey, I Shrunk Team Flash

A meta who can shrink anything he touches battles Team Flash.  Cisco (Carlos Valdes) and Ralph (guest star Hartley Sawyer) get caught in his crossfire and are shrunk to miniature versions of themselves. Cecile (guest star Danielle Nicolet) realizes her pregnancy has caused her to have temporary powers and discovers she can hear other people’s thoughts, which unnerves Joe (Jesse L. Martin).  Meanwhile, Barry (Grant Gustin) meets someone with a mysterious connection to Henry Allen.

air date: 1/30/18

The Flash Season 4 Episode 13: True Colors

After hearing that Amunet (guest star Katee Sackhoff) has struck a deal to buy all of the metahumans in Iron Heights, Barry (Grant Gustin) must decide if he should expose his powers in order to save his cellmates.  After a visit from an old friend, Ralph (guest star Hartley Sawyer) is reminded of his shady past and wonders if he’s really a changed man.

air date: 2/6/18

The Flash Season 4 Episode 14: Subject 9

Barry (Grant Gustin) meets a powerful woman whose abilities could help him in his battle with DeVoe (guest star Sugar Lyn Beard).  Meanwhile, after learning that DeVoe is targeting everyone who was on the bus, Ralph (Hartley Sawyer) decides he doesn’t want to be a hero anymore, his only concern is staying alive.  Harry (Tom Cavanagh) offers to help Joe (Jesse L. Martin).

air date: 2/27/18

The Flash Season 4 Episode 15: Enter Flashtime

When a nuclear bomb detonates in downtown Central City, Barry (Grant Gustin), Jesse Quick (guest star Violett Beane) and Jay Garrick (guest star John Wesley Shipp) 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.

air date: 3/6/18

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The Flash Season 4 Episode 16: Run Iris, Run

Team Flash confront a new bus meta, Matthew AKA Melting Pot (guest star Leonardo Nam), who has the ability to swap people’s DNA. During a battle with Team Flash, Matthew accidentally takes Barry’s (Grant Gustin) speed away and gives it to Iris (Candice Patton).  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.

air date: 3/13/18

The Flash Season 4 Episode 17: Null and Annoyed

Barry (Grant Gustin) and Ralph (guest star Hartley Sawyer) 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 (guest star Danny Trejo) returns to ask Cisco (Carlos Valdes) for a favor.

air date: 4/10/18

The Flash Season 4 Episode 18: Lose Yourself

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.

air date: 4/17/18

The Flash Season 4 Episode 19: Fury Rogue

When Barry (Grant Gustin) needs help transporting a dangerous meta, he calls on a new friend for help – Leo Snart AKA Citizen Cold (guest star Wentworth Miller). Meanwhile, Cisco (Carlos Valdes) becomes suspicious of Harry (Tom Cavanagh).

air date: 4/24/18

The Flash Season 4 Episode 20: Therefore She Is

Barry (Grant Gustin) and Team Flash team up with Gypsy (guest star Jessica Camacho) to try to thwart Thinker’s plan.  Meanwhile, Cisco (Carlos Valdes) and Gypsy have a heart to heart talk about their relationship.

air date: 5/1/18

The Flash Season 4 Episode 21: Harry and the Harrisons

With DeVoe’s Enlightenment device nearly complete, in order to disable it The Flash (Grant Gustin) and his team must put their faith in an unlikely ally – Amunet Black (guest star Kattee Sackhoff). Meanwhile, Harry (Tom Cavanagh) hits an all-time low when the “Council of Wells” kicks him out but then Cisco (Carlos Valdes) introduces him to the “Council of Harrisons.”

air date: 5/8/18

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The Flash Season 4 Episode 22: Think Fast

When DeVoe assaults an A.R.G.U.S. facility to complete his Enlightenment Machine, Barry (Grant Gustin) realizes the only way he can stop him is if he allows Cisco (Carlos Valdes) and Caitlin (Danielle Panabaker) 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.

air date: 5/15/18

The Flash Season 4 Finale Episode 23: We Are The Flash

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

air date: 5/22/18

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The Flash Season 4 Villain

“Next season we’re not going to have a speedster as the main bad guy,” executive producer Andrew Kreisberg told the crowd at Paley Fest in Los Angeles. 

That’s something of a relief. While, of course, season one’s Eobard Thawne, the Reverse-Flash was kind of the gold standard of speedster big bads, Zoom was a little more of a mixed bag during season two. The Savitar storyline continued to unfold during season three, but it’s nice to see that they’re looking to explore other options next year.

So who could that other, non-speedster villain be? Well, in one key episode, we got a major clue from a minor villain. As Abra Kadabra was being led off to face his fate, Barry tried to appeal to his better nature, begging for information about Savitar. While pointing out that nobody hurt Barry as badly as Savitar will, Kadabra rattled off the names of the villains who have most impacted Barry’s life, including Thawne and Zoom. But there was another name.

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Devoe’s name was mentioned again in the season finale, this time by Savitar.

There’s only one Devoe worth mentioning in Flash mythology, and that’s Clifford Devoe, the Thinker. Devoe is traditionally known as more of a Jay Garrick villain, first appearing in All-Flash Comics #12 way back in 1943. He took on both Jay Garrick and the Justice Society numerous times, and he had a quaint (by modern standards) “thinking cap” which allowed him some amplified psionic abilities. But when his physical body died, he became a non-living artificial intelligence with even greater power. 

There are some more details on The Thinker here:

Watch The Flash on Amazon

So that takes care of the non-speedster big baddie. But one other villain comes to mind, the problem is, he’s a speedster.

That speed force storm we saw at the end of the episode resembled events from recent Flash comics, and that’s what gave birth to the villainous Godspeed. Something tells me they’ll wait a while before exploring this further, though.

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One other thing has been teased a couple of times for later seasons, and it’s the kind of storyline that only makes sense for the latter seasons of a show like this one. I wrote a little bit more about that here, but there are major potential spoilers involved, so go there at your own risk. I suspect this is more of a season five thing, though.

The Flash Season 4 Cast

Sugar Lyn Beard will play Rebecca Sharpe, known as Hazard, who will appear in the third episode of season 4. Variety describes Hazard as “perpetually down-on her luck and is convinced her life is cursed — until a freak accident changes everything. With the universe on her side, she poses a threat to both Team Flash and Central City.”

Hartley Sawyer has been cast as Ralph Dibny. Who is Ralph Dibny? He’s the Elongated Man, of course! Who’s the Elongated Man? He’s DC’s stretchy superhero! No, not Plastic Man, the other one.

Here’s the official word from DC:

Described as one of the Flash’s most iconic allies, Ralph Dibny—a.k.a. The Elongated Man—is a fast-talking private investigator with investigative skills that rival those of Batman. Upon discovering he has the power to stretch his body to any shape or form, Dibny uses his new abilities to help Team Flash solve one of Central City’s greatest mysteries.

Mr. Sawyer sure looks like Ralph Dibny, too…

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We got some other casting news last week during The Flash SDCC panel:

Danny Trejo (Machete) is set to join the cast as Breacher, a bounty hunter and father of Gypsy (Jessica Camacho).

Neil Sandilands (The 100) is The Thinker, a metahuman who battles The Flash throughout the season. He is billed as the “fastest mind alive” and plans to fix what he believes to be wrong with humanity. We have more details on The Thinker down below.

Kim Engelbrecht (Dominion) plays The Mechanic, an engineer who creates devices for The Thinker. She is the villain’s right hand. 

Katee Sackhoff has joined The Flash Season 4 for a recurring role as the DC Comics villain Amunet Black, reports EW. The character will debut in Episode 5, titled “Girls Night Out,” in a role that will apparently be the centerpiece of a mini-crossover with Arrow, enlisting the help Emily Bett Rickards’s Felicity Smoak.

Amunet, a.k.a the Blacksmith, is known in DC Comics for gaining the power to manipulate metal, even merging it with her own flesh. However, she’s also a schemer extraordinaire who’s been married to the likes of rogues gallery members such as Hunter Zolomon (Zoom) and Goldface. She would eventually build a criminal network for herself, masterminding metahuman criminal endeavors that often collide with the Flash.

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Sackhoff is considered geek royalty for her 2004-2009 run as Kara Starbuck on Syfy’s Battlestar Galactica. She had TV runs on Nip/Tuck and 24 and roles in films such as the 2013 horror film Oculus and the 2013 Vin Diesel franchise revival Riddick. She’s also been a standout on the A&E-cancelled/Netflix-acquired modern western cop show Longmire, on which she will return in the upcoming sixth season. However, she’s put in time as a villain before, notably on NBC’s short-lived 2007 Bionic Woman reboot as the evil bionic prototype enemy of Michelle Ryan’s Jaime Sommers.

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