The Flash - Season 4

The Flash - Season 4

Season 4

The mission of Barry Allen, aka The Flash, is once more to protect Central City from metahuman threats. But with Barry trapped in the Speed Force, this mission falls to his family – Detective Joe West; fiancée Iris West; and Wally West/Kid Flash – and the team at S.T.A.R. Labs: Caitlin Snow/Killer Frost, Cisco Ramon/Vibe and brilliant scientist Harrison Wells. When a powerful villain threatens to level the city unless The Flash appears, Cisco risks everything to free Barry. But this is only the first move in a deadly game with Clifford DeVoe, aka The Thinker, a mastermind who’s always ten steps ahead of Barry, no matter how fast Barry runs.
Network
Episodes23
DatesOct 10, 2017 - May 22, 2018
Previous SeasonNext Season

Episodes

The Flash Reborn
Season 4Episode 160 min

The Flash Reborn

Cisco comes up with a way to bring Barry back from the Speed Force when a new villain challenges Flash to a fight. However, Barry is... different than when he went in.

Oct 10, 2017
Mixed Signals
Season 4Episode 260 min

Mixed Signals

Barry and Iris discover that they're having communication issues and go in for couples therapy... just as a new meta starts targeting tech billionaires. Meanwhile, Cisco inadvertently blows off a special day for Gypsy.

Oct 17, 2017
Luck Be a Lady
Season 4Episode 360 min

Luck Be a Lady

The team goes up against the second of the Thinker's metas: Becky Sharpe, aka Hazard, who can gain good luck for herself as long as everyone else suffers. Meanwhile, Cecile suggests to Joe that they buy a new house, and Iris tries to plan the wedding.

Oct 24, 2017
Elongated Journey Into Night
Season 4Episode 460 min

Elongated Journey Into Night

While looking for the bus passengers, Barry and Joe come across Ralph Dibny, a former cop who was fired from the force and gained a.... unique power from the dark matter. Meanwhile, Gypsy's father Breacher comes to see his daughter's new boyfriend Cisco, and soon starts hunting him.

Oct 31, 2017
Girls Night Out
Season 4Episode 560 min

Girls Night Out

The guys and girls throw separate parties for Barry and Iris. While Barry gets drunk with some help from Cisco and Ralph takes them to a strip club, the ladies get involved with Killer Frost when her former boss, Amunet, demands that Killer Frost return to work for her.

Nov 7, 2017
When Harry Met Harry…
Season 4Episode 660 min

When Harry Met Harry…

Flash and Elongated Man team up to fight one of the Thinker's metas, a Sioux Indian woman calling herself Black Bison that is hunting down the three pieces of an artifact. Meanwhile, Harry calls together three of his counterparts to form the "Council of Wells" and figure out who DeVoe is.

Nov 14, 2017
Therefore I Am
Season 4Episode 760 min

Therefore I Am

Barry risks his career and his team trying to confirm that Clifford DeVoe is their unseen adversary. Meanwhile, the origin of the Thinker is revealed.

Nov 21, 2017
Crisis on Earth-X, Part 3
Season 4Episode 860 min

Crisis on Earth-X, Part 3

While Flash, Arrow, White Canary, Firestorm, and Alex attempt to return to Earth-1, Felicity and Iris team up to free Kara before Eobard and Fuehrer Queen remove her heart and transplant it into Overgirl.

Nov 28, 2017
Don't Run
Season 4Episode 960 min

Don't Run

Iris has to choose between her husband and her friend when Amunet abducts Caitlin while Thinker captures Flash. Meanwhile, Caitlin meets a new metahuman, and Thinker unveils the next stage of his plan.

Dec 5, 2017
The Trial of the Flash
Season 4Episode 1060 min

The Trial of the Flash

While Barry stands trial for Clifford's murder, a new meta threatens Central City and only Flash can stop him.

Jan 16, 2018
The Elongated Knight Rises
Season 4Episode 1160 min

The Elongated Knight Rises

While Barry sits in prison, Ralph faces his first major supervillain and is injured for the first time. He has second thoughts about being a hero, and turns to Barry for advice.

Jan 23, 2018
Honey, I Shrunk Team Flash
Season 4Episode 1260 min

Honey, I Shrunk Team Flash

The team goes after a meta with the power to shrink people and objects... and Cisco and Ralph ended up reduced to two inch height. Meanwhile, Barry tries to give Big Sir hope that they can clear his name.

Jan 30, 2018
True Colors
Season 4Episode 1360 min

True Colors

When Wolfe offers Barry and the bus metas to Blacksmith, Barry engineers an escape for all of them. Meanwhile, Ralph has a crisis of faith when an old "friend" tells him that he eventually fails everyone who counts on him.

Feb 6, 2018
Subject 9
Season 4Episode 1460 min

Subject 9

The team discovers the identity of the ninth bus meta, but she doesn't want their protection. Meanwhile, Cecile turns to Harry for help when Joe's dreams keep her awake at night.

Feb 27, 2018
Enter Flashtime
Season 4Episode 1560 min

Enter Flashtime

A terrorist detonates a nuclear bomb, and Flash must race between microseconds to try and stop it. Jesse and Jay lend their speed to his efforts, but even the three of them aren't fast enough to stop a nuclear explosion that has already happened.

Mar 6, 2018
Run, Iris, Run
Season 4Episode 1660 min

Run, Iris, Run

Iris accidentally takes Barry's speed when a new meta with the power to swap powers touches both of them. Now they have to learn how the other half lives as Iris takes to the field and Barry monitors events. Meanwhile, Ralph refuses to leave S.T.A.R. Labs for fear that Clifford will kill him, and Harry undertakes a dangerous experiment to match their opponent's augmented intellect.

Mar 13, 2018
Null and Annoyed
Season 4Episode 1760 min

Null and Annoyed

The Mechanic discovers what Thinker has been doing to her, and Breacher comes asking Cisco for help. Meanwhile, Team Flash goes after Subject 11, who can control gravity, and Barry questions if Ralph takes anything seriously.

Apr 10, 2018
Lose Yourself
Season 4Episode 1860 min

Lose Yourself

Team Flash tracks down the last bus meta, Edwin Guass, and discover that he holds the key to defeating Thinker. Meanwhile, Ralph considers taking extreme measures against Thinker,

Apr 17, 2018
Fury Rogue
Season 4Episode 1960 min

Fury Rogue

While Harry discovers the results of the Thinking Cap overload on his mind, the rest of the team call on a former ally to help them transport Fallout away from Thinker.

Apr 24, 2018
Therefore She Is
Season 4Episode 2060 min

Therefore She Is

Thinker continues with his "Enlightenment", and Gypsy joins Team Flash to try and stop him... and to discuss her relationship with Cisco.

May 1, 2018
Harry and the Harrisons
Season 4Episode 2160 min

Harry and the Harrisons

When they need an organic weapon to use against Thinker, Team Flash turns to Amunet... but Caitlin has an ulterior motive. Meanwhile, Cisco forms a "Council of Harrisons" after the Council of Wells kicks Harry out of the group.

May 8, 2018
Think Fast
Season 4Episode 2260 min

Think Fast

Thinker gathers the final component in his master plan, and to stop him Barry must train Cisco and Caitlin how to function in Flash Time. However, he refuses to endanger more of his friends. Meanwhile, Harry has an idea as to where they can find Marlize, and Cecile's pregnancy has strange side effects on her telepathy.

May 15, 2018
We Are the Flash
Season 4Episode 2360 min

We Are the Flash

With Marlize's help, Barry tries to make a last-ditch attempt to reach the good DeVoe inside of the Thinker... and meets an old friend.

May 22, 2018

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