Join or Sign In

Sign in to customize your TV listings

Continue with Facebook Continue with email

By joining TV Guide, you agree to our Terms of Use and acknowledge the data practices in our Privacy Policy.

The Flash Season 1 Episodes

23 Episodes 2014 - 2015

Season 1 of this action-adventure series follows Barry Allen (Grant Gustin), an assistant police forensic investigator who was orphaned when his father was falsely imprisoned following the mysterious murder of his mother. The season begins with Allen being struck by lightning during an intense storm caused by a particle accelerator explosion that bathes the city with an unusual form of radiation. The strike puts Allen in a coma for nine months. When he wakes up, he quickly learns he can move at superhuman speeds. It's a fate that also befalls others in the wake of the explosion and storm, creating several "metahumans." Allen then uses his newfound power to fight crime and go on a hunt for his mother's true killer. Candace Patton, Danielle Panabaker, Rick Cosnett, Carlos Valdes, Tom Cavanagh and Jesse L. Martin also star.

Episode 1


Tue, Oct 7, 2014 63 mins

Scientist Barry Allen acquires super speed through a freak accident and becomes known as the Fastest Man Alive. In the opener, Barry, a CSI investigator, is struck by lightning and awakens from a coma nine months later with the gift of super speed. Barry puts his new powers to work when another meta-human attacks the city.

Where to Watch
The Flash, Season 1 Episode 1 image

Episode 2

Fastest Man Alive

Tue, Oct 14, 2014 60 mins

Barry changes into the Flash when six gunmen storm a university event honoring a scientist, but his heroics don't match up to his expectations. Meanwhile, Iris becomes even more intrigued by the "red streak."

Where to Watch
The Flash, Season 1 Episode 2 image

Episode 3

Things You Can't Outrun

Tue, Oct 21, 2014 60 mins

Barry and the team go after the Mist, who possesses toxic gas powers, and they reflect on the night Caitlin's fiancé died. Meanwhile, Henry gets a long-awaited visit from Joe; and Iris and Eddie continue to keep their romance a secret from Joe.

Where to Watch
The Flash, Season 1 Episode 3 image

Episode 4

Going Rogue

Tue, Oct 28, 2014 60 mins

The Flash battles Captain Cold after the villain is involved in a robbery and plots to steal the Kahndaq Dynasty Diamond. The evil plans get a boost when the Captain gets his hands on a stolen "cold gun" that could kill the Flash.

Where to Watch
The Flash, Season 1 Episode 4 image

Episode 5


Tue, Nov 11, 2014 60 mins

A bomb explodes downtown and the army, led by General Eiling, comes in and takes over the investigation, much to Joe's dismay. Meanwhile, Wells informs the team that Eiling experimented on his men to turn them into super soldiers; and Joe tries to get Iris to stop writing about "the streak."

Where to Watch
The Flash, Season 1 Episode 5 image

Episode 6

The Flash Is Born

Tue, Nov 18, 2014 60 mins

The Flash faces a new meta-human named Tony, who can turn himself into girded steel, but Cisco comes up with a plan to take Tony down. Meanwhile, Iris gets in trouble over her blog; Eddie witnesses Tony's abilities and asks questions that Joe doesn't want answered; and Joe asks Dr. Wells to help him solve Nora Allen's murder.

Where to Watch
The Flash, Season 1 Episode 6 image

Episode 7

Power Outage

Tue, Nov 25, 2014 60 mins

The Flash battles Farooq (aka Blackout), a metahuman who can harness electricity. During their fight, Farooq siphons all of the Flash's electricity, which zaps him of his speed. Meanwhile, Tockman leads a coup inside the Central City police department and takes several people hostage, including Joe and Iris.

Where to Watch
The Flash, Season 1 Episode 7 image

Episode 8

Flash vs. Arrow

Tue, Dec 2, 2014 60 mins

A crossover event that concludes on "Arrow" begins with Barry teaming with Oliver Queen to stop a meta-human who is using his ability to control people's emotions to rob banks. Meanwhile, Eddie tries to get a task force to stop the Flash; and Caitlin and Cisco deal with a new team in S.T.A.R. Labs.

Where to Watch
The Flash, Season 1 Episode 8 image

Episode 9

The Man in the Yellow Suit

Tue, Dec 9, 2014 60 mins

Barry faces his nemesis Reverse Flash, who killed his mother, and plots with Wells and Cisco to trap him. Meanwhile, Eddie gives Iris a surprising gift at Christmas and leaves her with a question that could change her life.

Where to Watch
The Flash, Season 1 Episode 9 image

Episode 10

Revenge of the Rogues

Tue, Jan 20, 2015 60 mins

Captain Cold and his hotheaded partner Heat Wave plot to steal a multi-million dollar painting and try to lure the Flash into a battle of fire and ice by kidnapping someone close to him. Meanwhile, Barry asks Dr. Wells, Caitlin and Cisco to double his training efforts so he is ready when the Reverse Flash returns; and Iris deals with the aftermath of Barry's confession.

Where to Watch
The Flash, Season 1 Episode 10 image

Episode 11

The Sound and the Fury

Tue, Jan 27, 2015 60 mins

Dr. Wells' former protégé, Hartley Rathaway, returns to seek revenge on his mentor after being affected by the particle accelerator explosion. Meanwhile, Iris is hired as a cub reporter; Cisco recalls his first day on the job at S.T.A.R. Labs when he met Hartley and Caitlin; and Joe asks Eddie for a favor but asks him to keep it a secret from Barry.

Where to Watch
The Flash, Season 1 Episode 11 image

Episode 12

Crazy for You

Tue, Feb 3, 2015 60 mins

Caitlin takes Barry out to a local karaoke bar to help them both find new loves. Caitlin strikes out but Barry meets a sports reporter and asks her out for a date. Meanwhile, Cisco considers Hartley's dangerous offer; and the team search for Shawna, a meta-human with teleportation powers who just busted her boyfriend out of Iron Heights.

Where to Watch
The Flash, Season 1 Episode 12 image

Episode 13

The Nuclear Man

Tue, Feb 10, 2015 60 mins

Barry goes after Ronnie when he realizes Caitlin's fiancé is a dangerous meta-human who attacked a physicist. To track him, Barry visits Dr. Martin Stein who is working on a project called F.I.R.E.S.T.O.R.M. Meanwhile, Barry struggles to balance his duties as the Flash with the relationship he has with Linda Park; and Joe enlists Cisco's help to reinvestigate the murder of Nora Allen.

Where to Watch
The Flash, Season 1 Episode 13 image

Episode 14


Tue, Feb 17, 2015 60 mins

A nuclear explosion separates Ronnie and Dr. Stein. When General Eiling targets Firestorm, the two must decide whether they are safer together or apart. Meanwhile, Mason Bridge tells Iris that something secret is going on at S.T.A.R. Labs; and Stein gives Barry some important information about time travel.

Where to Watch
The Flash, Season 1 Episode 14 image

Episode 15

Out of Time

Tue, Mar 17, 2015 60 mins

The Weather Wizard appears in Central City to avenge his brother's death and targets Joe, who shot the man. Meanwhile, Cisco recalls the night when the team captured the Reverse Flash and realizes something doesn't add up; and Barry and Linda go on an awkward double date with Eddie and Iris.

Where to Watch
The Flash, Season 1 Episode 15 image

Episode 16

Rogue Time

Tue, Mar 24, 2015 60 mins

The Flash learns that Captain Cold and Heat Wave have returned to Central City, and that Snart has brought along his sister Lisa to help wreak havoc on the town.

Where to Watch
The Flash, Season 1 Episode 16 image

Episode 17


Tue, Mar 31, 2015 60 mins

A copycat killer known as the Trickster sets off bombs in Central City. In an effort to stop him, Barry and Joe seek help from the original Trickster, a criminal mastermind who has been imprisoned for 20 years. Meanwhile, Iris asks Eddie to help with a case. In flashbacks, Harrison Wells is shown coming up with the idea for the particle accelerator.

Where to Watch
The Flash, Season 1 Episode 17 image

Episode 18

All Star Team Up

Tue, Apr 14, 2015 60 mins

Felicity Smoak and Ray Palmer visit S.T.A.R. Labs when Ray needs help with his Atom suit. But they are called into action when a meta-human named Brie Larvin unleashes hundreds of robotic bees to attack and kill her coworkers. Also: A group dinner with Barry, Felicity, Ray, Iris and Eddie turns into a disaster.

Where to Watch
The Flash, Season 1 Episode 18 image

Episode 19

Who Is Harrison Wells?

Tue, Apr 21, 2015 60 mins

Joe and Cisco head to Starling City to continue their investigation of Dr. Wells. While in town, Cisco meets the Black Canary, who asks him for a favor. Meanwhile, Barry races to catch a meta-human who can transform himself into any person he touches, including the Flash.

Where to Watch
The Flash, Season 1 Episode 19 image

Episode 20

The Trap

Tue, Apr 28, 2015 60 mins

Barry, Caitlin, Cisco and Joe set a trap for Wells, but it puts Cisco in grave danger. Meanwhile, Eddie makes a decision regarding Iris, which unsettles Joe.

Where to Watch
The Flash, Season 1 Episode 20 image

Episode 21

Grodd Lives

Tue, May 5, 2015 60 mins

Dr. Wells unleashes Grodd on the city to distract Barry and his team who are dealing with Reverse Flash's latest threat. Joe, Barry and Cisco pursue Grodd into the sewers, but the gorilla kidnaps Joe.

Where to Watch
The Flash, Season 1 Episode 21 image

Episode 22

Rogue Air

Tue, May 12, 2015 60 mins

Arrow and Firestorm aid the Flash when Barry reaches out to Captain Cold to help defeat Wells but then proves he can't be trusted.

Where to Watch

Episode 23

Fast Enough

Tue, May 19, 2015 63 mins

Season 1 ends with Wells presenting Barry with a life-changing choice. Meanwhile, Dr. Martin Stein and Ronnie Raymond return to help the S.T.A.R. Labs team for the final fight.

Where to Watch
The Flash, Season 1 Episode 23 image