The Flash

63% Essential | Most Essential e1 | 23 Episodes
Pilot

S1E1: Pilot

Essential: 100% Yes | 0% No

Orphaned by tragedy and raised by his best friend's father, brilliant CSI Barry Allen gains powers when lightning strikes him during a freak storm; when another meta-human attacks the city, Barry puts his powers to the test.

Fastest Man Alive

S1E2: Fastest Man Alive

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Barry experiences a setback while pursuing robbers; Joe is upset with Barry for taking the law into his own hands; Iris becomes more intrigued by the "red streak."

Things You Can't Outrun

S1E3: Things You Can't Outrun

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Barry and the team track The Mist -- a dangerous new meta-human with toxic gas powers; Joe decides to visit Henry in jail; Eddie and Iris continue to conceal their relationship.

Going Rogue

S1E4: Going Rogue

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A villain named Leonard Snart (Wentworth Miller) gets his hands on a "cold" gun -- which could kill Barry; Joe gives Iris the silent treatment.

Plastique

S1E5: Plastique

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Gen. Eiling (Clancy Brown) and the Army take over the case after a bomb goes off downtown, drawing Joe's suspicion; after refusing to stop writing about "the streak," Iris receives a visit from the Flash.

The Flash is Born

S1E6: The Flash is Born

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A new meta-human is able to turn himself into girded steel; Cisco has a plan to take Tony down; Iris gets in trouble over her blog on Flash; Joe seeks Dr. Wells help in solving Nora Allen's murder.

Power Outage

S1E7: Power Outage

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The Flash goes up against Blackout, a metahuman who can harness electricity; Tockman takes several people inside the police department hostage.

Flash vs. Arrow

S1E8: Flash vs. Arrow

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Barry is thrilled when a case brings Oliver, Diggle and Felicity to Central City; a metahuman named Ray Bivolo -- who causes people to lose control of their emotions -- infects Barry; Eddie wants a task force to stop the Flash, infuriating Iris.

The Man in the Yellow Suit

S1E9: The Man in the Yellow Suit

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Barry enjoys holiday traditions with Joe and Iris -- and is faced with his nemesis; a touching moment with Iris is interrupted by Eddie's arrival.

Revenge of the Rogues

S1E10: Revenge of the Rogues

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Leonard Snart returns to Central City with a new partner, a plan to steal a multi-million dollar painting -- and to abduct someone close to Barry; Iris deals with Barry's confession.

The Sound and the Fury

S1E11: The Sound and the Fury

Essential: 50% Yes | 50% No

Dr. Wells' former protegee -- who can manipulate sound waves -- returns to seek revenge; Iris starts a new job; Joe asks Eddie for a favor -- and asks him to keep it a secret.

Crazy for You

S1E12: Crazy for You

Essential: 50% Yes | 50% No

Caitlin takes Barry out to a karaoke bar, hoping they both meet someone new; Cisco thinks about Hartley's dangerous proposition; Henry's snooping gets him into trouble.

The Nuclear Man

S1E13: The Nuclear Man

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Barry and the team realize they must pursue Ronnie after he attacks a physicist; Barry struggles to balance his new relationship and his responsibilities as the Flash; Joe asks Cisco for help investigating Nora Allen's murder.

Fallout

S1E14: Fallout

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Caitlin is thrilled to have her fiance back after an explosion separates Ronnie and Dr. Stein; Mason Bridge tells Iris that something mysterious is going on at S.T.A.R. labs; Barry receives important information about time travel.

Out of Time

S1E15: Out of Time

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Mark Mardon, also known as the Weather Wizard, targets Joe, who shot Mark's brother, Clyde; Cisco starts to wonder if Joe was right about Dr. Wells; Linda, Barry, Eddie and Iris wind up on an awkward double date.

Rogue Time

S1E16: Rogue Time

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Leonard Snart returns -- this time with his younger sister as well as Heat Wave -- to wreak havoc on the city.

Tricksters

S1E17: Tricksters

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A villain mimics a criminal mastermind known as The Trickster (Mark Hamill) -- who has been imprisoned for 20 years; Henry is abducted; Iris turns to Eddie for help with a case; flashbacks reveal how Dr. Wells developed the particle accelerator.

All Star Team Up

S1E18: All Star Team Up

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Felicity Smoak and Ray Palmer come to Starling City seeking help with Ray's suit; a metahuman named Brie Larvin (Emily Kinney) releases deadly robotic bees; a group dinner does not go as planned.

Who Is Harrison Wells?

S1E19: Who Is Harrison Wells?

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Joe and Cisco go to Starling City where they ask Capt. Lance for help with their investigation into Dr. Wells; the Black Canary asks Cisco for a favor; Barry is faced with a foe who can transform himself into anyone he touches.

The Trap

S1E20: The Trap

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Cisco uses himself as prey in a trap he sets up for Wells with Barry, Caitlin and Joe; Eddie's decision about Iris leaves Joe unsettled.

Grodd Lives

S1E21: Grodd Lives

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Barry deals with the latest threat from the Reverse Flash; Dr. Wells distracts the team by releasing Grodd on the city; Iris and Barry have a serious talk.

Rogue Air

S1E22: Rogue Air

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Barry reaches out to Capt. Cold (Wentworth Miller) for help as Wells gains the upper hand, even though Joe and Caitlin think Cold can't be trusted; Arrow (Stephen Amell) and Firestorm (Robbie Amell) arrive to assist Barry.

Fast Enough

S1E23: Fast Enough

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Barry is presented with a life-altering choice; Dr. Martin Stein and Ronnie return to help the S.T.A.R. Labs team.

59% Essential | Most Essential e1 | 23 Episodes
The Man Who Saved Central City

S2E1: The Man Who Saved Central City

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Still feeling responsible for Eddie's death, Barry pushes his friends away and tries to protect the city on his own; Cisco assists Joe with the Meta Task Force.

Flash of Two Worlds

S2E2: Flash of Two Worlds

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A mysterious man has a warning about an evil speedster intent on destroying The Flash; a determined officer wants to join Joe's meta-human task force.

Family of Rogues

S2E3: Family of Rogues

Essential: 50% Yes | 50% No

Barry and the team ally with the kidnapped Captain Cold's sister, but Barry feels duped when he learns Snart is working on something with his father; Joe faces a difficult decision.

The Fury of the Firestorm

S2E4: The Fury of the Firestorm

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Barry and the team search for another partner for Dr. Stein; Iris leaves Joe feeling surprised; Patty and Barry become closer.

The Darkness and the Light

S2E5: The Darkness and the Light

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Barry sets off to capture a new breacher who has come through the portal, but Jay tries to tell him she's not a threat; Barry and Patty go on a date.

Enter Zoom

S2E6: Enter Zoom

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Barry forms a dangerous plan to defeat Zoom; Iris not only supports Barry's idea, but supplies a surprising ally.

Gorilla Warfare

S2E7: Gorilla Warfare

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Barry races to rescue Caitlin when Grodd kidnaps her; Cisco plans a date with the new barista at Jitters; Patty thinks Barry is hiding something.

Legends of Today

S2E8: Legends of Today

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When Vandal Savage attacks Kendra Saunders, Barry takes Kendra to Star City, seeking Oliver's protection; Harrison asks Jay to test a new serum to make Barry run faster.

Running to Stand Still

S2E9: Running to Stand Still

Essential: 50% Yes | 50% No

The Weather Wizard returns to break Captain Cold and the Trickster out of Iron Heights, leaving Barry to stop the trio from taking over Central City during the holidays; Joe and Iris meet Wally West.

Potential Energy

S2E10: Potential Energy

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Barry wants to tell Patty that he is the Flash; Joe and Iris get to know Wally; the team pursues a meta-human capable of slowing time down.

The Reverse-Flash Returns

S2E11: The Reverse-Flash Returns

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An attack at Mercury Labs confirms that the Reverse Flash has returned; Iris and Francine share a moment that brings Iris closer to her brother.

Fast Lane

S2E12: Fast Lane

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Barry and Wells have an encounter with a meta-human known as Tar, who can turn into liquid asphalt; Iris is worried about Wally after learning about his hobby.

Welcome to Earth-2

S2E13: Welcome to Earth-2

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Barry, Wells and Cisco travel to Earth-2 to save Wells' daughter from Zoom, where Barry is shocked to meet Killer Frost and Deathstorm; Jay takes over the Flash's responsibilities when meta-human Geomancer attacks the city.

Escape From Earth-2

S2E14: Escape From Earth-2

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While on Earth-2, the team receives help from a surprising source as they search for Zoom's lair; on Earth-1, Caitlin works to perfect Velocity-9 so Jay can vanquish the Geomancer.

King Shark

S2E15: King Shark

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When King Shark escapes from an A.R.G.U.S. holding tank, Diggle and Lila go to Central City to warn The Flash; Joe, Iris, Wally and Barry are attacked.

Trajectory

S2E16: Trajectory

Essential: 50% Yes | 50% No

When Barry and the team decide to have a night on the town, they encounter a speedster with bad intentions; Iris gets a challenging assignment from her new boss and is caught off guard when their conflict turns to flirtation.

Flash Back

S2E17: Flash Back

Essential: 100% Yes | 0% No

After discovering the true identity of Zoom, Barry is more determined than ever to stop him; to increase his speed, Barry goes back in time to look for help from an arch nemesis.

Versus Zoom

S2E18: Versus Zoom

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Barry wants to use a tachyon device to open the breaches in a plan to catch Zoom; Hunter Zoloman's past on Earth-2 is revealed.

Back to Normal

S2E19: Back to Normal

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A meta-human named Griffin Grey kidnaps Harry, mistaking him for Earth-1 Harisson Wells, and demands a cure for his condition.

Rupture

S2E20: Rupture

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Back on Earth-1, Zoom is intent on taking over Central City; Barry and Wells devise a dangerous plan to stop Zoom for good; Barry reaches out to both fathers for advice.

The Runaway Dinosaur

S2E21: The Runaway Dinosaur

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Iris volunteers to act as the bait in a plan to trap Girder (Greg Finley) in S.T.A.R. Labs; Barry struggles to go back to his old life.

Invincible

S2E22: Invincible

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Zoom unleashes an army of Earth-2 meta-humans, the leader of which is Black Canary's doppelganger, Black Siren; Joe worries when Wally goes out to help The Flash.

The Race of His Life

S2E23: The Race of His Life

Essential: 0% Yes | 100% No

When Zoom (Teddy Sears) finally reveals his true plan, Barry (Grant Gustin) is more determined than ever to stop him.

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