The Flash: Season 4

2017 · 23 episodes · ★ 7.1

What Season 4 of The Flash

After the showdown with Savitar, Barry Allen must face a new enemy, DeVoe, a brilliant and evil villain who recognizes no borders. Barry is still dealing with the consequences of abandoning Iris for six months to balance the Speed Force, and their relationship is suffering. Alongside him, Cisco, Caitlin, Joe, Kid Flash and Ralph Dibny continue to protect Central City from increasingly dangerous criminals. Caitlin fears that her past as Killer Frost will bring trouble, while Ralph tries to find his place on a team facing ever more powerful metahumans.

23episodes

Oct 10, 2017aired

May 22, 2018latest episode

16 hrtotal runtime

Season 4 Episodes

4x01 The Flash Reborn
Oct 10, 2017 · 42 min · ★ 6.9
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.
Directed by: Glen Winter · Written by: Todd Helbing, Eric Wallace · Starring: Danielle Nicolet, Keiynan Lonsdale, Nevin Burkholder, Michaela Chalmers
4x02 Mixed Signals
Oct 17, 2017 · 42 min · ★ 6.7
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.
Directed by: Alexandra La Roche · Written by: Gabriel Garza, Jonathan Butler · Starring: Keiynan Lonsdale, Donald Heng, Aliza Vellani, Ryan McDonell
4x03 Luck Be a Lady
Oct 24, 2017 · 42 min · ★ 7.0
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.
Directed by: Armen V. Kevorkian · Written by: Sam Chalsen, Judalina Neira · Starring: Danielle Nicolet, Keiynan Lonsdale, Bernard Cuffling, Beau Daniels
4x04 Elongated Journey Into Night
Oct 31, 2017 · 41 min · ★ 7.7
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.
Directed by: Tom Cavanagh · Written by: Sterling Gates, Thomas Pound · Starring: Hartley Sawyer, Jason Bell, Peter Chao, Chad Riley
4x05 Girls Night Out
Nov 7, 2017 · 41 min · ★ 6.0
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.
Directed by: Laura Belsey · Written by: Lauren Certo, Kristen Kim · Starring: Danielle Nicolet, Hartley Sawyer, Emily Bett Rickards, Riley Jade Berglund
4x06 When Harry Met Harry...
Nov 14, 2017 · 42 min · ★ 6.8
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.
Directed by: Brent Crowell · Written by: Gabriel Garza, Jonathan Butler · Starring: Hartley Sawyer, Joe Kuma, Phoebe Lecky, Kim Suzanne Engelbrecht
4x07 Therefore I Am
Nov 21, 2017 · 41 min · ★ 7.8
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.
Directing: David McWhirter · Writing: Thomas Pound, Eric Wallace · Starring: Keiynan Lonsdale, Paul Batten, Kim Suzanne Engelbrecht, Rob Compton
4x08 Crisis on Earth-X (III)
Nov 28, 2017 · 42 min · ★ 7.4
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 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.The crossover starts on Supergirl S03E08 Crisis on Earth X (I) and Arrow S06E08 Crisis on Earth X (II). It continues on DC's Legends of Tomorrow S03E08 Crisis on Earth X (IV).
Directed by: Dermott Downs · Written by: Todd Helbing · Starring: Emily Bett Rickards, Dominic Purcell, Franz Drameh, Jeremy Jordan
4x09 Don't Run Mid-Season Finale
Dec 5, 2017 · 42 min · ★ 7.7
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.
Directing: Stefan Pleszczynski · Writing: Sam Chalsen, Judalina Neira · Starring: Hartley Sawyer, Kendrick Sampson, Kim Suzanne Engelbrecht, Jessica Camacho
4x10 The Trial of The Flash
Jan 16, 2018 · 42 min · ★ 7.3
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.
Directed by: Phil Chipera · Written by: Lauren Certo, Kristen Kim · Starring: Danielle Nicolet, Hartley Sawyer, Kendrick Sampson, Mark Valley
4x11 The Elongated Knight Rises
Jan 23, 2018 · 42 min · ★ 7.1
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.
Directing: Alexandra La Roche · Writing: Sterling Gates, Thomas Pound · Starring: Hartley Sawyer, Devon Graye, Corinne Bohrer, Bill Goldberg
4x12 Honey, I Shrunk Team Flash
Jan 30, 2018 · 42 min · ★ 7.3
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.
Directed by: Chris Peppe · Written by: Sam Chalsen, Judalina Neira · Starring: Danielle Nicolet, Hartley Sawyer, Bill Goldberg, Richard Brooks
4x13 True Colors
Feb 6, 2018 · 42 min · ★ 7.0
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.
Directed by: Tara Nicole Weyr · Written by: Gabriel Garza, Jonathan Butler · Starring: Danielle Nicolet, Hartley Sawyer, Kendrick Sampson, Kim Suzanne Engelbrecht
4x14 Subject 9
Feb 27, 2018 · 42 min · ★ 7.1
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.
Directed by: Ralph Hemecker · Written by: Mike Alber, Gabe Snyder · Starring: Danielle Nicolet, Hartley Sawyer, Bailey Corneal, Miranda MacDougall
4x15 Enter Flashtime
Mar 6, 2018 · 41 min · ★ 8.1
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.
Directed by: Gregory Smith · Written by: Todd Helbing, Sterling Gates · Starring: Bernadette Saquibal, Jessica Parker Kennedy, Klarc Jerome Wilson, Violett Beane
4x16 Run, Iris, Run
Mar 13, 2018 · 41 min · ★ 5.7
Team Flash confront a new bus meta, Matthew aka Melting Pot. He has the ability to swap people’s DNA, so during a battle with Team Flash, he transfers Barry’s super speed 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.
Directed by: Harry Jierjian · Written by: Eric Wallace · Starring: Hartley Sawyer, Oliver Rice, Max Adler, Koshiki Tanaka
4x17 Null and Annoyed
Apr 10, 2018 · 42 min · ★ 7.0
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.
Directed by: Kevin Smith · Written by: Lauren Certo, Kristen Kim · Starring: Hartley Sawyer, Miranda MacDougall, Kevin Smith, Jason Mewes
4x18 Lose Yourself
Apr 17, 2018 · 42 min · ★ 7.4
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.
Directed by: Hanelle M. Culpepper · Written by: Gabriel Garza, Jonathan Butler · Starring: Hartley Sawyer, Arturo del Puerto, Miranda MacDougall, Kim Suzanne Engelbrecht
4x19 Fury Rogue
Apr 24, 2018 · 42 min · ★ 7.0
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.
Directed by: Rachel Talalay · Written by: Joshua V. Gilbert, Jeff Hersh · Starring: Ryan Alexander McDonald, Kim Suzanne Engelbrecht, Donna Pescow, Wentworth Miller
4x20 Therefore She Is
May 1, 2018 · 42 min · ★ 6.9
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.
Directing: Rob J. Greenlea · Writing: Sterling Gates, Thomas Pound · Starring: Danielle Nicolet, Zachary Gulka, Kim Suzanne Engelbrecht, Laura Jaye
4x21 Harry and the Harrisons
May 8, 2018 · 42 min · ★ 6.7
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 when the "Council of Wells" kicks him out but then Cisco introduces him to the "Council of Harrisons."
Directed by: Kevin Mock · Written by: Lauren Certo, Judalina Neira · Starring: Leo Chiang, Mark Sweatman, Katee Sackhoff
4x22 Think Fast
May 15, 2018 · 41 min · ★ 7.6
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.
Directed by: Viet Nguyen · Written by: Sam Chalsen, Kristen Kim · Starring: Danielle Nicolet, Patrick Rinehart, Ryan Alexander McDonald, Kim Suzanne Engelbrecht
4x23 We Are The Flash Season Finale
May 22, 2018 · 42 min · ★ 7.0
Team Flash gets help from a surprising ally in their battle against DeVoe.
Directed by: David McWhirter · Written by: Todd Helbing, Eric Wallace · Starring: Danielle Nicolet, Keiynan Lonsdale, Hartley Sawyer, Kim Suzanne Engelbrecht