23 Episodes 2017 - 2018
With Barry/The Flash (Grant Gustin) voluntarily committing himself to imprisonment in the Speed Force, Iris (Candice Patton) forcefully leads a discouraged Team Flash in protecting Central City. However, a new villain emerges and threatens to destroy the city if the Flash doesn't come out to fight him. Against Iris' wishes, the team brings Barry out of imprisonment, though Barry seems incapacitated by his stay in the Speed Force. Later, the team realizes that by getting Barry out of prison, they played right into the hands of their new enemy, the Thinker (Neil Sandilands). Season 4 of "The Flash" also stars Carlos Valdes as Cisco Ramon, Danielle Panabaker as Caitlin Snow, Jesse L. Martin as Joe West, Keiynan Lonsdale as Wally West, and Tom Cavanagh as Harrison Wells. Danielle Nicolet, Jessica Camacho, Hartley Sawyer, and Katee Sackhoff make recurring appearances as Cecile Horton, Gypsy, Ralph Dibny, and Amunet Black respectively.
The Flash Reborn
Tue, Oct 10, 2017 60 mins
Season 4 begins with a powerful armored villain threatening to level Central City if the Flash doesn't appear, so Cisco makes a risky decision to break Barry out of the speed force. But the Barry that comes out isn't the same Barry that went in.
Tue, Oct 17, 2017 60 mins
Barry takes on a dangerous meta who can control technology and confronts an obstacle in his personal life: the ramifications of abandoning Iris for six months to balance the Speed Force. Meanwhile, Gypsy prepares for a hot date with Cisco, but she gets annoyed when his work keeps them apart.
Luck Be a Lady
Tue, Oct 24, 2017 60 mins
Barry and the team are hit by a string of bad luck and realize it is the handiwork of a new meta 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.
Elongated Journey Into Night
Tue, Oct 31, 2017 60 mins
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.
Girls Night Out
Tue, Nov 7, 2017 60 mins
Caitlin receives an ominous threat from her old boss, Amunet, and fears her past time as Killer Frost may be back to haunt her. Meanwhile, Felicity comes to Central City to help the girls celebrate Iris' bachelorette party; and Cisco, Joe and the guys take Barry out for a night on the town.
When Harry Met Harry...
Tue, Nov 14, 2017 60 mins
Barry turns to a surprising ally for help when collectors of Native American artifacts are attacked by a meta who can bring inanimate objects to life. Harry enlists Cisco's help to summon the ultimate think tank to crack the identity of the Thinker.
Therefore I Am
Tue, Nov 21, 2017 60 mins
Barry comes face to face with DeVoe; and 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, Part 3
Tue, Nov 28, 2017 60 mins
Part 3 of 4. 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 join forces 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.
Tue, Dec 5, 2017 60 mins
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.
The Trial of The Flash
Tue, Jan 16, 2018 60 mins
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
Tue, Jan 23, 2018 60 mins
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.
Honey, I Shrunk Team Flash
Tue, Jan 30, 2018 60 mins
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.
Tue, Feb 6, 2018 60 mins
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.
Tue, Feb 27, 2018 60 mins
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
Tue, Mar 6, 2018 60 mins
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.
Run, Iris, Run
Tue, Mar 13, 2018 60 mins
Team Flash confront a new bus meta, Matthew AKA Melting Pot, who has the ability to swap people's DNA. During a battle with Team Flash, Matthew accidentally takes Barry's speed away and gives it 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.
Null and Annoyed
Tue, Apr 10, 2018 60 mins
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.
Tue, Apr 17, 2018 60 mins
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.
Tue, Apr 24, 2018 60 mins
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
Tue, May 1, 2018 60 mins
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
Tue, May 8, 2018 60 mins
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.
Tue, May 15, 2018 60 mins
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.
We Are the Flash
Tue, May 22, 2018 60 mins
In the Season 4 finale, Team Flash gets help from a surprising ally in their battle against DeVoe.