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Season guide

The Flash: Season 2

23 episodes Premiered Oct 5, 2015 Updated Oct 1, 2026

The Flash Season 2 continues the overarching saga across 23 episodes. The television series follows Barry Allen, portrayed by Grant Gustin, who is a crime scene investigator. After being struck by lightning and experiencing a nine-month coma, or waking up from a coma, he discovers he has been given the power of super-human speed. Created by Greg Berlanti, Andrew Kreisberg, and others, the series premiered on The CW o

Previously on The Flash

Season 2 Lore Primer

Key plot threads, lore context, and character stakes you need to remember before diving into this season.

  • ⚡ Barry Allen is a crime scene investigator who is struck by lightning and awakens from a nine-month coma.
  • ⚡ The freak accident grants Barry Allen super-human speed, making him the fastest man alive.
  • ⚡ Barry uses his new powers to solve crimes.
  • ⚡ The series is created by Greg Berlanti, Andrew Kreisberg, and others, following Barry Allen portrayed by Grant Gustin.
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Season overview

The Flash Season 2 continues the overarching saga across 23 episodes. The television series follows Barry Allen, portrayed by Grant Gustin, who is a crime scene investigator. After being struck by lightning and experiencing a nine-month coma, or waking up from a coma, he discovers he has been given the power of super-human speed. Created by Greg Berlanti, Andrew Kreisberg, and others, the series premiered on The CW on October 7, 2014, and ran for nine seasons until May 24, 2023. As the fastest man alive, Barry uses his freak accident and resulting superspeed to solve crimes.

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Season 2 Episodes

Episode Guide

🛡️ SPOILER SHIELD

Season 2 Progress Shield

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Binge Efficiency Engine

Season 2: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

17%
83%
Mytharc (4): Crucial lore & season climaxes
Core (19): Character development & subplots
Side Quest (0): Standalone / filler
S2·E1 Mytharc

The Man Who Saved Central City

Oct 6, 2015 · 41 min

Picking up months after the Singularity attacked Central City, Barry is still struggling to forgive himself for Eddie’s death. Concerned about putting his friends in danger, Barry

S2·E2 Core

Flash of Two Worlds

Oct 13, 2015 · 41 min

Jay Garrick, a mysterious man from Earth-2, appears at S.T.A.R. Labs with a dire warning about an evil speedster named Zoom, who is set on destroying The Flash. Barry and the team

S2·E3 Core

Family of Rogues

Oct 20, 2015 · 41 min

When Barry and the team find out Captain Cold has been kidnapped, they form an uneasy alliance with his sister, Lisa. However, Barry feels double-crossed when he finds out Snart is

S2·E4 Core

The Fury of Firestorm

Oct 27, 2015 · 41 min

Barry and the team look for another Firestorm match for Dr. Stein. When the team meets Jefferson "Jax" Jackson, Caitlin has her reservations about whether Jax is the right match fo

S2·E5 Core

The Darkness and the Light

Nov 3, 2015 · 41 min

Barry learns a new breacher, Dr. Light, has come through the portal and sets off to capture her. Jay tells Barry that Dr. Light was not a threat on Earth-2 and that Barry can reaso

S2·E6 Core

Enter Zoom

Nov 10, 2015 · 40 min

After recent events, Barry decides it’s time to confront Zoom and comes up with a dangerous plan. Caitlin sides with Jay and deems it too dangerous for Barry to engage with the spe

S2·E7 Core

Gorilla Warfare

Nov 17, 2015 · 41 min

Grodd returns to Central City and kidnaps Caitlin. Barry and team race to find her before it’s too late. Meanwhile, Cisco plans his first date with the new barista at Jitters, Kend

S2·E8 Core

Legends of Today (I)

Dec 1, 2015 · 42 min

Vandal Savage arrives in Central City and sets his sights on Kendra Saunders. After Vandal attacks Kendra and Cisco, they turn to Barry for help. Realizing how dangerous Vandal is,

S2·E9 Core

Running to Stand Still

Dec 8, 2015 · 41 min

When Mark Mardon AKA The Weather Wizard returns to break Leonard Snart AKA Captain Cold and James Jesse AKA The Trickster out of Iron Heights, Barry must stop these rogues from tak

S2·E10 Core

Potential Energy

Jan 19, 2016 · 41 min

Now that they've grown closer, Barry considers telling Patty that he is The Flash. Meanwhile, Joe and Iris try to get to know Wally, and the team hunts down a meta-human who can sl

S2·E11 Core

The Reverse-Flash Returns

Jan 26, 2016 · 41 min

When Cisco gets a vibe of Eobard Thawne, Barry and the team don’t believe it. But, after an attack at Mercury Labs, Christina McGee confirms that the Reverse Flash is back. Meanwhi

S2·E12 Core

Fast Lane

Feb 2, 2016 · 41 min

Barry teams up with Wells to figure out a way to close the breaches, but they are distracted by a meta-human nicknamed Tar Pit who can transform into liquid asphalt. Iris is concer

S2·E13 Core

Welcome to Earth-2

Feb 9, 2016 · 41 min

Barry, Wells and Cisco journey to Earth-2 to rescue Wells’ daughter, Jesse from Zoom. Barry is stunned when he runs into Earth-2 Iris and Joe, but nothing prepares him for meeting

S2·E14 Core

Escape from Earth-2

Feb 16, 2016 · 39 min

On Earth-2, the team races to find Zoom's lair and asks for help from the most unexpected source. Meanwhile, back on Earth-1, Caitlin rushes to perfect Velocity-9 so that Jay can s

S2·E15 Core

King Shark

Feb 23, 2016 · 41 min

When King Shark escapes from an A.R.G.U.S. holding tank, Lyla and Diggle travel to Central City to warn The Flash. King Shark shows up at the West house and attacks Joe, Iris, Wall

S2·E16 Core

Trajectory

Mar 22, 2016 · 40 min

Having arrived in town intent on creating maximum chaos, Trajectory's antics are misinterpreted as having been perpetrated by the Flash himself. Barry thus must quickly uncover the

S2·E17 Core

Flash Back

Mar 29, 2016 · 41 min

After the shocking revelation that Zoom is Jay Garrick, Barry is more determined than ever to get back to Earth-2 to stop Zoom forever. Desperate to find a way to increase his spee

S2·E18 Mytharc

Versus Zoom

Apr 19, 2016 · 41 min

Equipped with the tachyon device, Barry believes he is fast enough to stop Zoom and wants to open the breaches to catch him. Harry strongly advises against that plan but after Barr

S2·E19 Core

Back to Normal

Apr 26, 2016 · 41 min

A meta-human with super strength named Griffin Grey mistakes Harry for Earth-1 Harrison Wells and kidnaps him, demanding that Wells cure him from his current condition. Realizing a

S2·E20 Core

Rupture

May 3, 2016 · 41 min

Zoom arrives back on Earth-1 intent on taking over Central City. Barry and Wells come up with a plan to stop Zoom once and for all but it’s extremely dangerous. Unsure if he should

S2·E21 Core

The Runaway Dinosaur

May 10, 2016 · 41 min

With Barry gone, the team must figure out a way to handle the return of an old enemy - Girder. Realizing Girder is retracing his steps from his last attack, Iris volunteers to act

S2·E22 Mytharc

Invincible

May 17, 2016 · 41 min

After Zoom unleashes an army of Earth-2 meta-humans on Central City, Barry is shaken when he sees their leader is the Black Canary’s Earth-2 doppelganger, the Black Siren. Meanwhil

S2·E23 Mytharc

The Race of His Life

May 24, 2016 · 42 min

After Zoom reveals his true plan, Barry vows to do whatever it takes to stop him.

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